Thanks everyone!
My newest has been a good baby, (so far, lol), and that makes it easier. The trickiest thing is feeding her on demand right now. (We ended up with a mild case of thrush, and then I came down with a mastitis infection, so no fun. Ugh...
Having this one family leave was a blessing in disguise, I think. It has been a pretty easy day with just my one full timer. Then I will have a part timer 6 days a month. I don't think I will fill the spot immediately. I am not worried about being able to fill it, as I have had people tell me they are interested anyway.
I am not sure when they decided not to come back, as this is the family that was flip-flopping back and forth. Something tells me that they knew before Saturday, though!! As I said, I COULD demand payment based on the terms of my contract... but I don't want to. Good bye and good riddance!