My DM lives 150 miles away (she moved away) but visits roughly every 3-5 weeks. Often, I have to work at weekends from home and get the DCs to different classes etc (just starting back up again).
However, if I ask her to watch the DCs whilst I work or take them to a class during her visit, she seems to become offended. I've asked her if she minds and she says she doesn't but I'll then get a comment when she's been drinking along the lines of me "using" her for childcare. This is quite laughable in a lot of ways as it's literally 1 hour here or there when she visits and my ILs do a lot of the childcare for us during the week in terms of school pick-ups and have never once complained.
She wants to visit her grandchildren but appears to resent any time alone with them despite saying she doesn't mind.
I like spending time with DM but can't get away from the busy nature of our weekends. We can't visit DM at her house either as she has moved in with a friend so there is nowhere for us to stay and there are no affordable hotels nearby either. I've explained to her that she will be alone with DCs for 2 hours this weekend as I have so much housework to do before we all return to school and work next week, but I feel so guilty for asking her and I can tell she feels "used." I will be spending time with her myself and cooking for her, but I can't dedicate my entire weekend to her visits. If I suggested she didn't see the DCs whilst I was busy, she'd be offended at that too so I'm not quite sure what she's expecting of me here?