She is SUPER self-conscious about her Apex prowess.
She ghosted a close friend who said she was boosted to Pred rank.
On two separate infamous occasions, we've witnessed her completely melt down when she starts to lose a competition. In one case, entering a tournament filled with pro players where she got stomped pretty badly. And in another case, losing a friendly competition against her own genmates. She completely melted down, that's the only way to describe it. She just cannot handle losing at Apex, somehow it damages her on a deeply personal level.
I watched this from Elira's perspective, but you can see Selen's perspective on her channel
https://www.youtube.com/watch?v=qPmKj39Mumo 
