One thing I emphasize to my little ones when I am in therapy or not feeling well is:

First and foremost, they WILL be cared for; whether by myself, my husband or somebody else that is trusted and loving. I tell them when I feel better I will do all the little special things mommy does. In the meantime, just know I love them very, very much and would never not take care of them. They need to feel safe.

The second thing is mom will be ok.