In the vlog again she says something like how she has to 'take over from Rich', as if they can't ever look after the kids together. They have always divided their time being with the kids, and it's just so strange. Sure, lots of parents divide the tasks, but she is so strict about 'my day/Rich's day' it feels like she's hiding upstairs on days when it's not her time to look after the children. It always comes across as a massive burden to her, something she'd rather offload than is capable of enjoying.
I guess that's what happens when you have children because it's 'the right/next thing to do'.