That's what I was referring to earlier.If she lives in a "no fault" state,this incident (if it is what it seems to be) won't help her a bit,except maybe with child custody.
She can file an emergency restraining order
Have him removed from their home
File a separation and get a judge to issue her a fat check every month
Withhold the child claiming a pattern of abuse. Demand supervised visits.
Since she bailed him out I think there's something off about their relationship, no?