I’m certain whatever medication was given was measured doses as important she look reasonably alert. Enough that would temper any outbursts she might otherwise have given.
I heard a report she was very popular with the inmates. So no doubt her “charm” continues to work favorably for her even within a prison system. She’s a master at reading people very quickly and sizing them up...so am not surprised she was supported within the prison system.
One of Casey’s tricks which is quite obvious is the way she always is doing nice things for people. I believe she does this to deflect any questions asked of her.