Yes - it is in the posts about her here in the boards. there was an argument at 8:00 which a neighbor overheard someone say "stop hitting me". That was apparently just before she went over.
We know the husband was not an angel, but by most reports he was a pretty good guy who treated her very well most of the time, even her family says so.
He had one prior arrest for domestic abuse - charges dropped by her.
I have seen bi-polar people who are borderline suicidal. They can do things like provoke fights, and then try to shift blame to the other party when they do so.
I am not saying I know what SHE did, I am just saying that it isn't unusual.