I'm pretty sure Tamina has been a heel as of late, but they just kind of flip her around from one side or the other based on what they need for that episode. Much like Alicia Fox, who I don't think ever did anything to face turn but randomly started allying with faces, they mostly don't bother even having these divas turn. They just say "**** it, whatever" and team/ally them with whoever suits them. The whole thing is a mess.
Oh, and I'm pretty sure Kaitlyn turned on AJ and joined Beth and Nattie at a Smackdown taping, but then it never aired. So, in WWE's world, that means it didn't happen.
Yeah, a quick trip to YouTube and
here it is.