Since she is in high school I bet there is many more activities for her to get involved in that will take up the week ends.
Tell her to get involved and enjoy these activities. Band, drama, glee club, et can take up a lot of time. This will make his weekends even shorter until you can refile.
I suggested this idea to her, also. And she said she is fed up. That she can't deal with him and his wife any more.
Have any of you had experience with this? Do the police get involved? And what happens if they do get involved?