We were talking about my mother's mental illness, so I can only assume that when she meant 'sick' she meant sick with my own mental illness.

I'm a little worried about bringing it up to her. She's very hard on herself when she says something that bothers me and I feel guilty about it. Like I said, I know that my head is off, but hearing it was just different. And, I guess, being included in the same 'sick' as my mother didn't make me feel much better.