I don't feel sorry for Tara. She isn't the same person she was when she first entered the show. She embraces the lifestyle and seems to enjoy being the ole lady of the man in charge. In fact she loves it. She loves the power she feels being who she is. Even looking at the clip for the next episode when she grabs Jemma by the throat, she may have been hesitant at first but she is addicted to the power IMO.
Nero on the other hand sill seems like a genuine good person at the core.