Hi there Easy,
I'm just going to try to present a different perspective. It may be right, it may be wrong. From her point of view, the relationship, however wonderful and intense, might still be very new. A person's family and especially children have a special place in their lives, and cannot always be 'integrated' with a new person very easily. Perhaps her daughter would really be upset, whether this is right or wrong, and J50 does not want to make that happen. Forcing you on the children is not a good way to start off a good relationship with them. Their reaction might be wrong or knee-jerk, buit there it is and she cannot just ignore it and expect everything to work out afterwards. It would be setting the stage for an all out struggle between you and her children, and this, you would lose.
On the other hand, maybe she is trying to get some space and tactfully placing blame elsewhere to spare your feelings. You have decided that Saturday night is your GF night and you have to dance. Maybe she has not decided that Sat is her BF dancing night and she wants some flexibilty. Are you upset that you did not dance that one Saturday, even though you did spend time with her, and she invited you to her long time friend's party?
She might be the kind of person who thinks out loud. Saying that it is a good time to integrate you might have been her thinking then, but later she decided it was not a good idea for whatever reason - drama, other events to upstage, etc. Who knows.
Without knowing everything, which is impossible in a forum like this one, I have to say I just might begin to feel a little smothered if I had to commit after 2 months, introduce to my whole family including my children, sign up for dancing every single last Sat night even if other things are going on, and I accepted an expensive gift, which was, surprise! dancing-related.
If things have gone too fast and you both feel that they have, you can always slow down and regroove. You are running the relationship, you two. You can do anything you want.
You think you might have seen some red flags in the beginnning about her always doing what other people want. Are you just expecting her to do what you want, instead of what they want? Would that make you happy - or do you want her to really stand up to you and express her own opinion, even if it collides with your own?
a contrarian
Plucky