Hi, Julie,
You didn't say how old your daughter is, but I get the impression she is about the age of my now 17 y/o son. He has been, to all intents and purposes, very accepting. Yet, he has also told many of his friends and consistently with them and others refers to me as 'Dad' while with me he calls me 'mom.'
I have also gotten the 'you will always be 'male name' to me regardless how you look and who other people all think you are.' That talk generally arises when he is stressed-out about social relationships, school, college-to-come, etc.
I think we have a great relationship together. He brings me so much of his life, his worries, his trials and hopes. He says that he finds it easier to talk with me than with his birth mom. He lives with her so he can maintain his old school.
Anyhow, I think the struggle here is about 'who am I.' That young adult time is, as I recall, a major struggle. If my friends are any indication it is not a tumultuous time just for teenagers who are trans. *smile*
My son, and, I expect, your daughter are struggling for their own identities during their late-teens and early twenties. Their own confusion about who I wanna be, who people think of me as, who will I be, etc. To have a gender-dysphoric parent, particularly, I suspect, one who cannot any longer pass as their birth-designated gender especially, can cause some really added problems that are probably exacerbating the usual identity diffiuclties our children have anyhow.
I know it's hard, as it is for me. But the confrontation and explanatory position is probably the exact wrong one to take at this point. She, as my son, have obviously had this explained to them throughout the process. They are both still majorly involved with and obviously love their 'second-moms.' That is what it is.
And I don't know about you, but I really love that. He accepts me and gives me high regard. Will he shift his focus from what is bothering him about himself to what he would like to be bothered about and blame me for sometimes? Yes, he does.
But, I am convinced that if we leave them to their own devices, love them, hold them and help emotionally when we are invited, that we will find that our children not only love us, but maybe even admire us and certainly respect and accept us.
Time is a healer, if we give it time.
HUGS,
Nichole