Hearing that my girlfriend's mother has cancer made me happy.
Why would you be happy about that?
Why shouldn't I be happy for her death?
Death is a sad occurrence. Especially when it is someone that you know.
I'm glad she is out of the picture. My gf has major issues because of her and that to me is what matters.
That's really messed up, and you shouldn't be delighted in anyone's passing. Imagine how scared you would be if you had cancer? It's not a fun process and that shouldn't bring you glee.