I like Wonka's advice on what to say. Your husband is ill, they need to know that.

Have you thought of counseling for them? It can be helpful to talk to someone not connected to the situation. At 15 your D may or may not be interested. It's never to early to show our kids how to take care of themselves. When we need help, we ask for it.

Me 57/H 58
M36 S 2.5yrs R 12/13

Let me give up the need to know why things happen as they do.
I will never know and constant wondering is constant suffering.
Caroline Myss