My friend doesn't like using my pronouns

I need some help, my friend of almost 3 years just refuses to use they/them when referring to me. I know she knows about it because she always makes jokes about being an air molecule (bc of the trump thing, should mention she recently told me she's a trump supporter) I try telling her to use my pronouns but she doesn't listen an misgenders me every time. We had an argument about it but she still doesn't try correcting herself.I don't want to dump her because we've been friends for a while but she's been drifting away if you know what I mean. Update: dumped her, she tried justifying trumps actions with the immagration act after i told her i was scared of my aunt gettig deported