Aaaah! I've made Molly look utterly evil!! and I hate colored pencils.
Okay, I just suck at using them.
I don't know if Molly used the killing curse on Bella or not, but I think she certainly would have been furious enough to do it.
Here's the rough sketch before I mutated it with color.
Oh, and here is a fantastic pre-Hallows song. This guy is awesomely hilarious.