Well! Um. Welcome to FR! Hope your stay is long.
I won't come right out & say she's capable of killing either, but remember, she DID offer to run over Casey's legs to avoid him going to Iraq.
To which he refused.
And didn't she say that "if she started hitting something/someone, that she would not stop until it/them was dead? Don't remember the exact phrase - she was speaking about her anger I believe.