We have this problem. And it's getting getting worse. DP and I have been together 3 years and have a DD who is 1. DSD is 6. She, in the three years we have been together, has stopped overnight maybe 4 times. ExW is bitter and since her and DP split has actively encouraged DSD to not want to sleep at her Dads.
We have a dog, DSD was told that dogs bite and they are horrible, which meant she was terrified of the daft dog who loves her to bits (she's got over this now and they are best friends), we had DD and she was told by mum that babies cry all the time.
Every other weekend we are supposed to have DD overnight and every weekend we have her, ExW tells DP at pick up that she "has plans with DSD the sun morning or sat eve" that cannot be changed as its distant family, or some other rubbish. So we end up having to take her back, as the ex will have told DSD all about their plans and he doesn't want to upset her. Ex tells DSD that "mummy will be sad when you're at daddy's" and "mummy's going to miss you because she is all alone". So we obviously get tears and constant asking of when she is going home. She is at the stage that if we even mention sleeping at our house she gets upset because she will "miss mummy and mummy will miss her". And I can't count the amount of times we have got her into bed and the tears have stated and he's given in and taken her home. I'm very much of the mindset that she should stay over, tears or not every other weekend, as the tears soon end and won't hurt her, but I understand that is not everyone's view.
DP is distraught, all he wants is his girls to be together EOW. We've tried it all, sleep overs with my niece and nephew (she did stop once), we've gone to his mums caravan once, which again worked but only because he wouldn't drive 100 miles to take her home. We've done rewards for sleeping, which she didn't want, we've redecorated her room to exactly what she wants, still no difference. We are completely stuck at what to do.
After a really bad crying fit as he picked her up yday (this is our weekend, she refused to sleep again) he has decided that it's too much to keep trying to get her to sleep and he's not going to try any more. Which is sad as DD loves her big sister.
The girls get on fantastic, DSD says she misses her sister all the time. I get on great with her too, and we do have lovely days out, but due to her not wanting to be part from her mother at all we never get a whole weekend with her.
Can anyone offer any advice. Sorry to hijack!