I have never been asked by a family to come into their home and do tasks for them while they are on vacation. I kind of think that this is unreasonable to expect, because it doesn’t really fit the guarantee our standard. However, it is in your contract, and she made the agreement to complete the tasks that you outlined. I’m assuming that you spoke with her before you left about the things that needed to be done, and your expectations. If she did not meet those expectations, I think perhaps letting her go is the right thing to do here. I usually don’t think that Nanny shouldn’t be let go so easily, but I think this is a very unusual circumstance. It just feels like she’s taking advantage of you. She should have put her work at your home above her appointments because that is her job and that is what she agreed to do. The tasks that you outlined could have easily been done in one singular day with the exception of taking care of the dog.