Sirry Usly:

Idk... after everything she did, I do not think death is a little harsh. And although her child is innocent, she'd be better off without having a mom like that. 

I don't think death is too harsh. I just think it's an easy way out for her. She should suffer more while living. I think the ending that she got was fitting for her character, although maybe she should have been bullied more by her cellmates.