Fly you fools.
That is it. The best advice I can give to someone who is in an abusive relationship- Leave immediately. I never been in abusive relationship...or any kind of relationship. So I am not a great advisor on this matter. I only know that even famous people like Johnny Depp can be in abusive relationship. Still I think that victim in abusive relationship is also partly responsible. For staying and enabling that abuse. For believing that abuse will ever stop if they will stay together. We are no longer living in the caves so no one should stay and keep suffering the abuse. You could call the police or contact a lawyer. But that can be done once you are safe. So before doing that a victim should leave the abusive relationship.
three items
I think that one of the items I would take would be a sharp knife. It could be useful in various situations from hunting to self defence. I would also take tent- who knows if I would have any shelter in my destination? If I would not get a place to live a tent would prove very useful. I have not built a tent in many years but I still believe that building it would be easier than building a house. It would also not require as much tools and time. Final item I would take would be a pack of matches. I never tried to make fire without matches/ lighter. So in unknown destination I would like to be sure that I will have fire. Without fire I would not have food and fire could scare away wild animals as well as give me warmth. So having fire would be just as important as having a shelter.