Eyeshigh, she states she has three huts, so I think Terina hit the nail on the head. She just needs to keep trying. I remember on couple had to try over 30 times before they got a baby! If they were not so long, I don't think they could have lived through that experience! ;0
I agree with you. I would only add that I'd had three villagers (one male, two female) that just would not mate; they would run for the hills. Or the two females I mention never had children. They either ran or the few things they give in and go into the hut, no baby.
It just happens like that sometimes.