I don't think it's anything major because everything else is normal with her. It's good to know that yours are more chatty now....I try to think positive with them. There was one point where they started fighting ALL the time. I thought something was wrong, that one was sick or something. I asked a vet and she said, "Sometimes they just get sick of each other's faces."

Teirza part Siamese so she talks a lot more anyways, and Dodger is MaineCoon (mostly) so he never meows unless he's really pissed.