My DD1 was about 18 months when she started having sleepovers with my parents but we had lived there so she was very comfortable with them and still is. I'm glad she has a strong bond to other people. She stayed with them while I had DD2 and even though we went home the next day she asked to stay with them another night, I bawled my eyes out but it really is a good thing lol. They are taking her away to the beach for a couple of nights next week actually.

But 5 weeks? No way! You're not being unreasonable or insulting at all.