Can you teach summer school? Maybe D can sit in the class and color, practice preparing for the next year? At least it's something and only a few hours.
I'm reading The Power of Now to help with my mental lashing out. It was recommended by someone on these threads and she said it changed her life. I'm on chapter 2 so we'll see how it goes! Just wanted to throw it out there though in case you girls wanted to check it out too.
