Apart from the trans issue there's a lot more to living in Thailand than just upping sticks and plonking yourself down here. Moving to another country requires research and planning regarding visas, healthcare, location, relationships etc.
Maybe she has done some research but social media, Tiktok in particular, is littered with people young and old who have come here without fully thinking it through.
I guess it might be a bit easier now with so-called digital nomad visas. Good luck to her.