Did the sand people hold a senate spot? I can't remember honestly. Still what is important is what Anakin thought not what she thought. She was horrified but also understanding with someone she loved. Not seeing that as "a big dumb plot", just the fact that of a motherly like instinct to protect. This happens all the time with humans and why can she not be a human with flaws? Why not? They were animals to him and they could be animals to her. The key is that she can have unconditional love for yes...even a psychopath. Heart wants what the heart wants. She had a concerned look and I don't think she was blindly ok with it. However I think that given the circumstances where his mother was a slave (and what else??) I think that him snapping was insanity. Insanity and a duty to follow your lover/fiance is common even with senator types. Not seeing how she is different than any other human that had strange behavior in history. In some ways, knowing his mom too, she might have felt the same.