I'm closing too. Last day is next Friday. Just have zero desire to keep doing this job and its affecting my mental health too.

As the previous poster said, move ahead (guilt free) with your notice. Its one week before Xmas and I am sure she has some holiday time (or Christmas closure time) and between two parents and hopefully grandparents it works out. In the end thats not your concern. My fam had to arrange back up care as well until Christmas. Good luck with your new venture!