Wow... i'm at a loss of words

She should have known, that the shortest section of hair grows out the fastest... ignorance or scumbaggery, i don't know... but she sure is unprofessional.
But whenever you have bangs, they grow faster than the rest, at the expense of thinning other hair, although this mostly applies to female hairstyles, where the length difference between bangs and the long sections is a foot or more. So depending on how messed up your bangs were, they could've been razor-cut to make them lighter and wispier, or somehow evened out if that was necessary, but loping off everything goes against all logic.
While i'm not exactly in a position to help you buy the wig, i will help with almost everything else...
(i know a good company that makes high quality wigs and toupees, but those are mostly for people who have long-term hair problems, and probably not in your price range, but i will still post the link for other transwomen, if i'll be able to find it....I'm
not a customer myself, but they seem to have well-designed and durable hairpieces for a wide variety of needs)
While i'm still a stranger on this site, it's probably not a good idea for me to "advertise" any product, but in my later posts, i will fill in any missing information, brand-names and such.
I should probably mention, that i have a hair problem of my own, indirectly due to not being able to smoke at this time (living with anti-smokers). A pathological head scratching habit has taken its place as a way of managing stress that makes me lose hair faster than it can grow back on its own. While anyone could tell me to just stop, i rarely notice until it's too late, and i see the strands of hair in my hand.
So i could definitely share with you the hair-regrowth regimen

The things i'll list here may not all apply to you, but i see this thread as a reference page for the future, for everyone that has a problem even remotely similar to yours or mine.
Ok...
Re: cornrows...
Not the best idea. For hair to grow, hair follicles in the scalp need both nutrients and stimulation. Poor blood flow is the #1 reason for age-related hair loss, and the body naturally tries to get rid of any hair that is stuck and immobile, or weighted down, the reason why hair extensions and weaves cause hair loss as well.
What i would suggest instead, for under the wig, is to use one of those plastic up-do things that most drugstores sell... it's a stretchy, zigzag-shaped type plastic band that circles your head and pulls hair up from around the edges.
Anything that it doesn't catch can be held in place with bobby pins that you can bend slightly to the curvature of your head.
The main reason for this is that you can take all of them out at the end of the day, and quickly put them back in in the morning. It is very important to be able to give your hair some rest at night. Also, at least twice a day, in the morning and in the evening, take a soft, gentle hair brush (round-tipped wood or plastic bristles), bend over (butt up, head towards the floor), and brush the scalp until it feels warm and tingly, and your face turns pink. That will bring fresh blood to your hair follicles, washing away toxins and bringing nutrients that will help hair grow.
A folk remedy from some country achieves something similar using an extract of hot peppers (steeping them in vodka or another cheap distilled spirit and using the resulting solution). I haven't tried it myself and don't know how long it takes to make out of dried peppers, but it does get the job done.
The next thing is to provide the right vitamins for the body to use in regrowing hair. Many companies sell hair growth vitamins, but myself i would recommend the powder sold by the same company that makes Spirutein protein shake mixes. It's quite effective, although you have to drink it with another of their shakes (Fruitein banana orange is the very best) to cut the taste. By itself, the hair growth shake is slightly bitter and has a chlorine-like aftertaste. But don't worry, it's all vitamins.
In addition to that, you can take a collagen supplement. NeoCell is a good brand, and Costco sells big bottles of the "collagen I and III" formulation (bovine), which you can supplement with the same brand collagen II (chicken) from another store. Hyaluronic acid is a related thing, and when taken with collagen, helps skin and joints. Some people also take fish collagen, which is an even smaller molecule, but i'm just adding this for information.
For collagen to be properly absorbed and put to use, it's best to take it with vitamin C. Ester C is a non-acidic formulation that i recommend over the regular sour tablets, and Costco sells that in big bottles.
Biotin is another thing that helps hair and nails, best taken as soft gels (absorbs better).
Brazil nuts also have something in them that helps hair growth and thickness.
To summarize the above, one can prepare half a scoop of hair growth shake and half of some other flavor. I use water instead of milk to avoid tying up and deactivating certain vitamins, and blend using a hand held, pocket sized mixer (runs on 2 AA batteries) in a cup. Drink immediately, otherwise the mixture turns a little goopy after ~5 minutes.
For collagen, one can take 2 or 3 pills of collagen I&II (broken in half is good) + one capsule of collagen II + one pill of ester C (broken in half is good) + one softgel of biotin (optional for long term maintenance) + (optionally one capsule of Hyaluronic acid, more for skin and creaky joints)
Another thing is forgot, is JarroSil, a bio-available silica preparation, drops... it also helps skin, hair, nails and joins. It needs to be taken mixed into a small amount of distilled water. You can take it, or not... with the other stuff it's not really necessary.
Brazil nuts, you can eat a handful every day, but be sure to chew until they turn to puree... that way you get the most out of each nut. Any whole pieces pass thru the system undigested. Wash them down with a gulp of water.
With the right nutrients and scalp daily brushing, hair will grow as fast as an inch per month, while neglected hair usually grows only half or 1/4 as fast.
Another thing that helps hair grow faster is trimming it once a month, even a few millimeters. That helps jump start sleeping hair, but in your case, your hair isn't sleeping. Some holistic doctors recommend cutting hair while the moon is in Leo. I don't know why, maybe it's a certain point of the moon cycle. But if you ever need to check what moon sign it is, you can go on
moonchart.org ...the time there is in UTC, but it's simple math.
I think i've probably listed everything there is to list.. please take care and if you have any questions, just ask

For people with hair loss: FYI, Rogaine does not and will not help with regrowing normal hair... it regrows thin, downy hair that will fall out as soon as the use of it is discontinued. Not that i've ever touched the stuff, but it's a well known fact.
-Xx