I completely understand what your saying. I used to live with my bf and his sister and her 3 kids. they were very loud disobedient and disrespectful. and my bf. would leave me alone with them to deal with it. it was very triggering for me as I wasn't on any medication at that time. its part of the reason I got back on medication. I eventually left a year ago because it was still a struggle for me. guidelines need to be set to keep yourself on track. you have to think of yourself. not trying to be selfish way but in an I care about myself and my mental health way. becoming mentally unstable is one if the worst feelings in the world. if your family really cares about you and your well being then they won't pressure you or force you into watching their kids. at the same time you must take a stand for yourself too.