I really liked Meg calling them on the fact that, had they realized she was a girl possessed, just 50 words of Latin would have saved her life. It's true. Meg's story is pretty tragic. Of course, it's really the demon's fault, but it was the perfect guilt button to push--and Sam *is* dealing with Ruby, a woman possessed.
I was glad to see Meg back. Best demon in my opinion. I really felt for her. She wasn't evil, just possessed, and they were so intent on destroying her, they didn't think about saving her. But they are human, and humans make mistakes. Sam doesn't treat Ruby the same way he did Meg. Kinda hypocritical. I don't mind Ruby, but she has no purpose. As of yet.