Something they really love?
Her family and friends. Really generic, I know, but their love and support really matters a lot to her, like a special lot, and she cherishes it all. I guess it makes sense in context.
How does your OC react when they’re embarrassed?
She shrinks, looks away and either lowers her voice and talks less and more hesitantly or stops talking entirely. She might get a little moody too, but that depends on what embarrassed her in the first place.
What are some of their weaknesses?
Besides her power’s instability, she’s also a little too curious and a little too stubborn, which don’t go well together. She also has a tendency to do things impulsively and without asking first, because she thinks it’ll make others mad (and most of the time she’s right because most of the time it’s dangerous shit) without considering that it’ll make them even more mad that she didn’t even let them know.
Overall, her self-loathing gets in the way a lot because that’s what makes her not think things carefully. Because she’s worthless and a burden so would it really affect anyone if something happened to her?
Spoilers, it fricking would.