why do my in-laws constantly want my daughter but then try to bring her home sooner than expected or…

why do my in-laws constantly want my daughter but then try to bring her home sooner than expected or drop her off with me to watch for a few hours then they get her again... why even take her if they are so busy that they can't take her with. I already don't agree with the way they try and parent her. they ask me if I need a break and in the first time in nine months I do need a break for my babys teething but they want to drop her off at home just to get her back later then she gets to come home just to go to my moms because she actually plans with me to see my daughter. so much moving around for rosemary isn't good it just makes her upset when she comes home to me. I'm thinking I will keep my daughter away from their houses for a few months she doesn't need their influences and I don't need the stress caused by immature adults. that's so embarrassing that I as a 19 year old can say I'm surrounded by adult children like they are all stuck in middle school.