OK grabbing on and holding tight! Thinking of and praying for you. Wish I was close enough to edjumacate your relatives out of being so awful, regardless of whether words or a pillar of higher learning (aka 2X4) was the best tool. sometimes you have to use the Pillar to get their attention, Know what I mean?? YES, that is a JOKE, and I would not ever advocate hitting someone esp notwith an object like a board. But sometimes the mental picture is needed to give some relief, Know what I mean??
I hope things get better very fast. Regardless of if you are in their home or not, if they are abusive, stand up to them and tell them to stop. If they continue, esp to be abusive to your child, or their own, call CPS. NOT joking. Yes, will cause family problems, but don't you already have too many of those going on? Sometimes that CPS call gets you weeks or even years of silence, which isn't always as bad as it may seem at first.
I would bet that CPS would help you get back home if you and/or difficult child are being abused by your relatives. So don't be afraid to call them for help!
((((((((((hugs))))))))))