Do I walk away from WAW? (1)

[1foot2]

Last night after we all got home from oldest S' open house at school, she said she was leaving to do some work for her new course. My thinking now is that she will use " needing to get some work done" as a reason to leave whenever she wants. I put the kids to bed on my own. Later I texted her that we need a few things from the store for the kids tomorrow morning, and she responds that she might stay out (which means that she will stay out) and that she'll bring them home with her when she comes home to help get me get them to school. This morning she texts that she has a bad fever and can't make the drive. I now have to take both boys to school solo and bring the baby with me. And we don't have the lunch stuff we need.

This is where I struggle. I have a hard time laying down boundaries as it creates friction, and I'm trying to just leave her to the consequences of her own decisions. But this is something else. And it's her friction!