This is Risa after a bath but after a drink. One can't expect the grandma to stay perfect, now can we?
Besides, she has earned every right to look whatever way she wants. Well, that's my take on it!
I think she actually likes her grandson, Truff. It means she thinks he has some backbone.
She has never been one to respect one that didn't. Oh she's kind but she really likes the ones with backbones. :-)