There already is trouble in your family, And I have been there. Well maybe not your exact place. Family trouble gets out there sometimes

But you need to ask a few questions, And these are between you and your pain.

1- Do I want to sacrifice own health and life for my attackers comfort?

2- Is there a reason why I should carry all the burden and pay for all of the damages of abuse, Because my family don't want to deal with it.

3- Write the answers down. Do they make sense when you are not in that situation?

At the very least set up a vid recorder. Find the evidence one way or another. And at the very least, Give it to an interested 3rd party who will give it to the authorities if something happens.