Just to add that it is not recommended to leave under 16's alone overnight. I think you mentioned night shifts, which in my view present a very different problem from day shifts. I think children's services and the police may take a dim view of children being left alone overnight, and your DIL needs to be aware of this.
Good Morning Sunday 8th November 2026
Is tai chi enough daily exercise?
We always had an adult with ours until our younger one was well into his teens (grown up half siblings were a great help) if we couldn't be there.