Sherry was prone to migraines. It was one of the down sides of her "powers." He body has to go into overdrive when she's supposed to be sick or hurt to heal her, and ends up with at least a headache, if not a very painful migraine.

If she was able to sleep, she'd just sleep through them. Perhaps something she learned from Leon... Probably shouldn't take coping advice from him. But that did work out most of the time.

But if she couldn't sleep it off, she'd just lay there and suffer. Before and after her partner, you, moved in with her. But after you moved in, she could at least have someone to complain to.

"I'm gonna die," She says, face down in a pillow. You were just getting home for work and changing into different clothes.