I get that she is overwhelmed. She currently is watching 4 children (3 full-time). Two 1.5 year olds including mine, a 3.5 year old who is NOT potty trained and does NOT attend preschool, and a school age child part-time.
She does not handle any behavioral challenges well with the children. She tells me immediately if my child hits or bites but doesn't seem to be able to manage the behaviors which are very normal in young toddlers but just need to be addressed if they occur.
I get the impression that she is really just looking for a family with 1 child and the only reason she is watching multiple children is out of financial necessity. She could not find a job without the help of a former family she worked for and she relies on nanny-sharing to pay the bills. I've scoured the area for pricing and other families. She moved to my area from Northern VA where she was able to make A LOT more money as a nanny. She moved to my area without a job and bought a condo and needs a certain amount to live on. She wants to continue nannying but she simply is not going to find a family willing to pay what she is looking for and if she does, it may take another year or two. She will need to care for minimum 2 children but I'm willing to pay more for my 1 child than most people in my area are willing to pay so for her to try and find this set-up on her own is going to be nearly impossible especially considering the lack of initiative she takes. I honestly don't think she will find herself a better nanny position in my area than what me and this other family could offer her but ultimately, I can't continue to worry about her own finances. I need to ensure my child is taken care of.
I'm also starting to get the impression that she is tired and possibly resentful of my child. He is not a 'bad boy' as a 1.5 year old but he has been acting out more lately. Coincidently, his acting out began when she began to seem more tired and unhappy. The more unhappy she is, the more he acts out. Now, it's become a habit and I really don't think she is doing enough to address it. We created a plan to address his behavior and I don't believe she is adhering to the plan. I'm worried that my child's behavior is going to continue to go downhill if she can't respond appropriately.
If I've lost my trust in her, then obviously it's time to find new care.

I don't think a day or two is going to change this.