applying for ilr, looks like for many people is taking longer than 3 months, so if her husband phoned up UKBA and told them he was no longer supporting his wife and the marriage is over, maybe they will refuse the app.

domestic violence i dont think would help, does she have evidence doctor or police reports ? , also shes moved out of their home.

i know it sounds bad, but if she put up with all the for so long, why she couldn't try stay with him but avoid him as much as possible until she got ILR.