It's sad your stuck in the middle and for your kids not to spend some time with your parents.my inlaw's didn't like me cos i was to close with my mother
they were jealous cos i didn't like them the way they were controling over me me and my husband used to live with them for 8 years then i started to open my mouth they didn't like that..lol then one day we moved out we're more happier now..but i still don't get along with my father-inlaw he just say's neg things about me and my mother.and we never done anything to him....anyway i guess you just need to talk with your parent's and ask what's their prob...i wish you well