So my MIL and FIL have been very kind to offer to help with childcare once I return to work. My MIL originally said she would reduce her working hours so she would work 4 days a week and my FIL is self-employed and said he also would take 1 weekday.
My MIL then changed her mind and said she wanted to work 5 days a week, but would do Tues-Saturday, allowing Mondays to look after the little one. My FIL would then take Tuesdays.
My husband and I had a discussion with her to say we were concerned about her doing 5 days a week because she is the only one in her household who does cooking, cleaning and shopping, which occupies an entire day off. Her remaining day would then be looking after a 1 year old. She insisted this would be fine because looking after her grandchild would be like a 'holiday'. This is bearing in mind that when she describes my husband and BIL's childhood, she says that she lived in a house of 30 people in Kenya and didn't know where her kids were half the time because everyone else was caring for them.
After some thought and discussions with my FIL, my MIL decided 4 days would be better.
My hubby and I then also realised my FIL doesn't seem like he would cope well looking after a child alone- as I said before, my MIL does all the cooking and cleaning and he doesn't so much as make an omelette for himself let alone prep baby food and change nappies. My hubby tried to bring this up with my MIL, but she just dismissed him and said 'oh he'll be fine and i finish at 3pm so will help him after'.
My MIL was then concerned about whether she would get replacement bank holidays if she doesn't work Monday's. Her employer told her no because she would not be contracted to work Mondays anyway (makes total sense to me, I don't know why she would have expected differently).
My MIL didn't tell me she no longer wanted to provide child care on Mondays because of bank holidays and randomly asked me today when FIL is supposed to care for the baby. Next thing I know, she's had a meeting with her employer and told them she wants Tuesdays off instead and that she doesn't mind working 5 days on that basis. But she didn't discuss this with me until after her meeting.
I have a feeling my MIL will suggest my FIL takes Mondays and she does Tuesdays, but would it be unreasonable for me to say no and ask for them to share Tuesdays? That way my FIL will have support with the baby. A little bit of me also wants her lay in her bed the way she made it. I really don't appreciate how she went about all of this in a really sneaky manner 