You are worth it because you are you, Emma. You were Emma when you met your wife, and you are Emma now. It just took some figuring out of some stuff. You are no less a person than when you were that awkward girl crushing on another girl, while still being within yourself. And that's kind of the hardest thing for trans people.
Everything about you that matters, doesn't come from what gender you are. It comes from your soul. Your wit, your literary gift, your kindness, your understanding, your loyalty.. hell I could go on but I don't want your head to grow too big, lol. 😉 The point is, the thing that makes us... us... is there and will always be there, no matter what bits we have in what locations. And while I get why it's hard for some partners to see beyond that, in terms of procreation and physical lust, I would suggest that it's the other parts of you they fell in love with. As that video shows. You don't marry the sex organs, you fall in love with the person. And if you don't... there's something wrong somewhere.
As an aside, that girl is legit amazing. Massive kudos. I love how she is like "I don't need to put words to how I feel. I just feel." That is very much me. Damn, Amanda is someone special.