Okay, so I think I kinda got the ''why'' of her wanting so badly to give herself a NB (and now trans) label. It's because she hates who she IS, not her sexuality. Think about it: she did questionable and morally wrong things during most of her life, and when she got (rightfully) called out, she freaked out and chimped all over the place. But, since she has lots of mental issues and a low IQ, she can't understand that what she might be feeling right now is maybe regret for getting caught and being in the negative spotlight. So her weak little brain translated these feelings as ''might be tranz''.
That's why she feels comfortable presenting herself with breasts and vagina in her drawings, and only really got intimate with men. She's a morally broken person who is feeling sorry for herself for getting caught, and thinks that being ''a new person'' means having a new sexuality, which we know is bullshit. You're born LGBT+, you don't just wake up one day and think ''woah you know what guys? im in the mood for being gay and being a new person!''
All she had to do to redeem herself was sincerely apologizing to the people she harmed, deleting her shit from the internet and live her life as low profile as she could, while actively working hard to improve herself. She has to improve the AMANDA, not the AMARI, because that's just a made up identity. Instead of working on her flaws, she's just adding more shit in her already gigantic shit pile she calls a personality.
In conclusion, she's just a narcisistic straight cis woman who's feeling sorry for getting caught in her bullshit and now thinks being trans will fix things when actually it's only making things worse.