Yeah but she is not better, unless you keep someone lock up you can't protect someone from everything. She just close herself in thinking she have a mission to protect her friend. The funniest thing will be that her friend is also a sadist. But anywya, protect from what ? Not like Hinako is the one with the stranges fetishs, it always have been Airi who bring the things up. Hinako wouldn't do anything to her friends because it's not the type of relation she want with them. That's nice to her to think to protect her friend but she need tounderstand that Hinako don't always behave like she does with Airi.