Because I cant ask her to look after her little brothers for half an hour without a massive argument?
She was sitting on her phone doing fa and I asked her to watch them so I could have a bath and she went off in a massive strop.
Apparently it's completely unfair and I'm a slave driver because she watched them while I was making the dinner.
Nevermind that I watched them alone all day while she was out with her friends.
She has now stormed off to her dad's,no doubt to tell him how I'm all the arseholes, and I'm left alone with two toddlers again.