She needs to document everything, with dates and times, but put any writings etc, in a safe place away from the husband. Write a diary of events, of stresses, of impacts, of the shoving etc. Maybe she can give the diarys to you, to keep safe from her husband. She needs to keep receipts as much as she can of his spending on himself
I agree with this but the problem is she won't do it if she thinks it's collecting data to use against him.
So...Why not ask her to write a regular diary - and pour her heart out to it, don't hold back - as a good way of dealing with stress etc and helping her to be a better Christian
BUT of course this has the real advantage of documenting his behaviour, albeit in a modified way,
1.however should she need it in the future it's there, in writing
2. It may help her to see how bad things really are ( and they are) when she reflects back on how her life is progressing via the diary.
And yes, isn't it awful how the victim gets judged???