Man, that sucks. Im sorry to hear that.
Trust me, I can empathize with what it sounds like youre going through (regarding your Mum, not the, having a child part).
My Mum still has never called me my name. Although now she does call me a nickname which seems to be a compromise.
Thered be times where the family would go out to see family friends etc, or even just going to Church and Id say that Im not going. I wouldnt leave the house unless it was on my own and I could go walk the dog with my hood up and pass alone. But to leave with them, Id be introduced wrongly, and everything wrong pronoun, was like the horrible grip around my heart getting tighter, and its like I could feel my soul sink a little. To begin to explain to her, just like you said, her face changes, she goes serious, annoyed and just ahh, so much I could read into. She didnt want to hear any of it.
At the time, there was nothing else I could do. She had to come round to it all on her own. Which, even if I were to go back to that time, knowing all this still wouldnt help, itd be up to my Mum.
But what Id like to add is, as the years have passed, she and the most of my family, have gotten so much better. She really does try to support and care for me in all ways that dont necessarily pertain to this area as its still a sore subject. She just sees me as her child now. She is much better with trying pronouns. Still on the nickname as opposed to my name though, and she doesnt like me bringing up lower surgery, though she wants me to keep her in the loop.
However, from me being the disappointment in the family, so it seemed, she said she was proud of me the other day. So, as dismal as it can look and feel, things can improve. Aslong as you just continue being you, hopefully her being given the time and space to realize that she should be putting her love for you before her uneasiness or unhappiness at things, will help.
I hope all goes well for you Schism!