Any thoughts maybe I should contemplate to try to get an answer for myself?
I would suggest not focusing on labels, but rather actions. Labels are tools, not boxes.
Do you want to dress differently? Try different a name or pronouns? Take HRT? How does thinking about these questions make you feel?
https://genderdysphoria.fyi/ may also be useful. I'd also suggest looking up the term "gender envy".
Looks like she's having a whale of a time!