My DH goes away for work quite often, usually for a week at a time. My parents or usually just my mum comes to stay overnight while dh away to help out with my young toddler and to give me a break/ relaxation time. My Mil doesn't offer to help until she finds out my parents are coming and then offers to visit to help on a day my parents will be here. Then gets annoyed making passive aggressive comments when I say that my mum will be here. She never offers if my parents aren't coming or on days my parents won't be here. She also isn't bothered about seeing my dc much. She just makes passive aggressive remarks about how often my parents visit. Am I being paranoid to think that mil just wants to help out on the days my parents are to sabotage it for them, so they see my dc less? She also isn't much help with my dc, she just talks about herself the whole time.