you could try to start with relaxing your guard, and stop pretending as far as possible while still not expressively stating that you're not a... umm, whatever it is you're pretending to be right now.
bring up articles that you've read in conversations, rather than sending them to your mom. stop before it becomes uncomfortable, just tell a nice story, let your mom say what she thinks about it, and then let it be. pick another positive article next time. but let some time pass in between. she might eventually ease up, and start feeling a little less uncomfortable talking about this stuff. instead of pushing, just drop a thought without really letting her get too much opportunity to oppose you.
unfortunately, there isn't much you can do to change her mind. she'll have to do that on her own. i would gladly sacrifice a little of my freedom in order to be able to see my younger siblings. like following certain clothing rules when visiting.
there is nothing shameful about being you. other people might be ashamed of you, but that is due to their own lacking ability to love. i think that being able to compromise just because you love your family so much, is really a sign of strength, and something to be just as proud of as transitioning despite their complaints.
it would be very nice if your mother could find it in her to accept you as you are, though. i'll be praying for that to happen.