My dd is 18 months and my dh's sister has a dd just two months older. I know I am supposed to see it as a good thing that DD has a cousin of a similar age but it never feels that way. My MIL looks after DD's cousin while SIL is at work but as I'm a SAHM she's never called upon to look after DD. Consequently MIL seems closer to the cousin and compares DD to her all the time and always remarks on how shy DD is compared to her cousin. It's true but DD is only shy and uncomfortable around DH's family - with my family she's loud and funny!
Whenever I arrange to do something with DD, DH and MIL insist that SIL and DD's cousin are invited. Consequently what could be a fun day out gets hijacked and DD is not herself around them - she always looks happier and far more relaxed when they've gone.
Last week I finally managed to get DD into a toddler dancing class, it's a very popular class but I knew she'd love it because she loves music and dancing so much, she's always dancing to anything. DD had a great time and really came out of her shell - I think this could turn out to be her "thing". Except now MIL has told SIL and they're talking about coming now. I can't help feeling annoyed and worried this is going to spoil it for DD. DH says I'm being unreasonable but I just know they will hijack it and the girls will be compared even more. I just wanted something DD could call her own, away from her cousin, but it feels like whatever she does is going to be hijacked by them and I am annoyed about this in particular as this is something she has really taken to and it would be awful if it was ruined.