When this woman isn't sure if she messed up or not, she asks Reddit:
I 27F have been dating Ben (32M) for two years now, Ben has a 12 year old daughter Sam. I met Sam about a year ago and it didn't go very well at the beginning. Sam not wanting someone to replace her mom (I am not trying to do that) and a whole problem of she still wants her parents to get back together.
Ben and her ex got divorced three years ago (50/50 custody). I am the first serious relationship with Ben which makes it harder for Sam. Sam and Ben do therapy and it got better, I sometimes join for it but that is rare and it is by Sam or Ben invite. Anyways it is better now, but Sam has a habit of its it something I enjoy she likes to take it.