My mother in law

My mother in law hates me. She’s made that clear. She threw a fit about us getting married, and even told my husband she doesn’t like me, because I have bipolar disorder. Recently she started talking to me again, and now she wants me to go up the their cabin with them, and our daughter. My husband will be working, so it would just be my father in law, my mother in law, our child, and myself. I don’t know how I feel about it, because we don’t have the greatest relationship. I don’t really want to go if my husband isn’t going. But he thinks I should go. 🙄 I don’t know what to do.