People love those who do terrible things everyday. It's just the way things are when someone has deep feelings. We forget the inequities. And, yes, Ani's mom was killed viciously making his actions understandable but not tollerable. Ani killed everyone, and showed no remorse and blamed Obi wan for his actions instead. Padme wants to help him. She like him, maybe loves him, but she will change those ideas when she realizes what's she's gotten herself into. Things like that happen all the time.