Am I the a hole?

Just kind of have to vent because I was annoyed, but don’t have any impartial people I can vent to about this.

So I have two under three and I’m finishing off my mat leave and got a new job where I’ll be working 2 and a half days a week. Right now my MIL comes to see my kids every Friday and stays the entire day. This is all self initiated, I never asked her to do this, she just wanted a standing day that she could come see the kids every week.

My own mother also said she would be willing to help me by taking the kids for one day a week if I wanted to go grocery shopping/ get errands done.

So when I got this job offer, we went to both of them and asked them if they would be comfortable continuing to do what they were doing and possibly alternating the half day or even keeping what they are doing and we could get daycare for the other day.

My mother said yes, my MIL went into a big thing about what was going to happen down the road and was she expected to be the family baby sitter and would she have to now babysit my brother in laws kids when they eventually have children? She said she would need time to think about it and she didn’t want to be tied down with it. So we said don’t worry about it, we don’t want this to turn into any sort of resentment. We went and got daycare for the 2.5 days and moved on! No problem, no animosity.

Until this week when she came over and said “Hey so I wanted to talk to you about our standing day with the kids”

I said “fridays? The kids will be in daycare now?”

She said “Yeah, I know. But I’m not really sure I’m ready to give up my standing day a week with them yet!”

Am I the asshole for being annoyed with this? Basically she doesn’t want to watch the kids on the days we need, waits until we fully arranged to pay for three full days of daycare and then says she wants a different full day with the kids each week. So now in a few weeks I would go from being around my kids 7 days a week to only having three days with my kids?

I don’t want to deprive my kids of time with their grandmother at all but feeling annoyed about this for sure and now I’ll be losing out on my own time with my kids.