Girls, in autumn I want to separate from her and go on vacation with m…

Girls, in autumn I want to separate from her and go on vacation with my husband for 3-4 days without her. She will be 1.2-1.3 years old then. We live with my husband's parents and they don't love her at all. The daughter loves them very much, if she doesn't see me at all, she doesn't look for her. They put her to bed during the day without me. Did you ever travel like this? What do you think? I'm thinking about it now and already feel guilty and miss her ? We have traveled with her many times and it can't be called a vacation.