All I can say is that when I lived in Holland my MIL used to come to visit for 2 weeks including three weekends. I found it a real chore as I was left with her during the day and although I didn't feel I had to entertain her it was just the fact that she was there. Also we never knew when she had booked to go home so I had to ask my SIL. Having said that it could just be that the other mother is jealous at the length of time you spend there. I think the best thing is to ask them making it clear that you would not be upset if they wanted you to come for a shorter length of time.
Reupholstering a Parker Knoll chair
Boris Johnson referred to the police for suspected further breaches of lockdown regulations.