I don't hate Boomer. I'm thinking that she did intend to join the good guys, and then the good guys wanted to kill her, so she needed a new plan. Tyrol helped her get out, with the aim of her getting away, maybe looking for a planet or something, but she was so mad and hurt and broken from how she is the show's punching bag that she decided that going back to Cavil was the only real option. But to go back to Cavil she needed leverage so he didn't just kill her, so she took Hera. And the shagging Helo? That was just the most expedient way of getting out of the situation, while also rubbing Athena's face in the fact that she has the life Boomer should of had and Boomer's got crap all. That's what I'm thinking.

Haven't watched Dollhouse yet so didn't even read what you wrote. Sorry. I'll probably be back once I've had a chance to see it. :D