She’s not even mine!!

Long story short. Me, my husband, and our two kids live with his parents.
I ended up having to watch his brother and sister. Simply because mom doesn’t want to bring her kids out with her.

For the past 2 years it’s been like that.

Come to present time and I have very bad declining health. Our youngest baby also has health issues. My husband has not been able to go to any of my appointments or hers simply because we have to watch her kids.
When I was pregnant with our second he was never able to come with me to the doctor because we always had his sister and he had to watch her.
I just had a very bad doctors appointment last week where I got bad news. I was all alone while receiving the news. I told his parents ahead of time before to appointment so my husband could be there, but sure enough come the day of and we have to watch his sister.

She’s not even mine!! But every single day I have to watch her. If I say no then we have to deal with his mom being mean and rude to us. That or she ends up beating the crap out of the girl just because they can’t get along. So I feel guilty anytime we have to leave her at home.