😨— Haze's biggest fear is...
... Motherhood.
Which seems reasonable since her own mother Ballad couldn't even handle a gentle "mom" from Haze's lips without collapsing and lashing out. After all, carries Ballad's struggle in her name.
I've already shared that Haze has at least one abortion, and that is actually a little subplot in my during-the-time-skip fic Master of Puppets. That little arc puts Haze in a highly vulnerable place (because I decided that it's chem-baron Finn who knocks Haze up; it was entirely consensual, and Haze even enjoyed their short affair) and I think that is an important aspect for Sevika x Haze. After all, they meet after Jinx's explosion destroys Sevika's arm, so that's when Sevika was in a highly vulnerable place shortly before. My point is not implying that an abortion is the same level of medical intervention as amputation or equal in consequences (because I definitely think abortion is liberation, I wouldn't necessarily claim the same about amputation).
Haze's fear of motherhood, and by extension pregnancy, ignites serious existential fear. It is treatable, so to speak, but still puts an enormous strain on her: losing control over her body, knowing something is in motion inside her body, leaving her exposed to the mercy of whoever carries out the abortion, where her autonomy lies in someone else's hands... Sevika is the one she leans on.
(Silco, meanwhile, makes it so much harder than it has to be.)