my DP & I do not live together (at the moment) but plan to in the future. He has custody of his DD (10) but unfortunately relies on his mother to look after DD b4 & after school.
Up until recently his sister (lives at home with his parents) constantly arranged things for his DD - haircuts late on a Friday night or shows at weekend - sounds lovely but she did it without asking him and it encroached on both our weekends and his ex's weekends. He has asked them to consult him b4 arranging things (which didnt go down well) and we thought they had agreed.
DSD has her bday in May & we had arranged for her to have a sleep over with a couple of friends. DP's sister has now asked DD if she would like to do something else (without asking him) and now DSD has decided to do this instead.
I had gone to a lot of trouble to organise the sleep over & DSD had asked her friends, but now that has been cancelled.
AIBU to think that they shouldnt interfere?
Its hard enough being a step parent dealing with exes without future MIL & SIL constantly undermining.
I know there are far more important things to worry about but I find this hard to face going forward in our relationship. If you think this is the norm, then feel free to say so & I will try to ignore it all.