In the last couple of months I have gone out with 2 Latin women. Both in their mid-20's. One I met on my own and one I was set up with. In both cases, they waited until we were sitting down at dinner to let me know they had kids. And further, one told me she was CURRENTLY in a relationship, but that she was mad at the guy and hadn't talked to him in 3 whole days! The other one had gotten married when she was 17 and was divorced at 25. I have learned my lesson.
I hate to break this to you, but this type of attitude is not unique to Latin women.
Maybe they didn't really like you, but just wanted a free dinner...