Telling people about being a magical girl wasn't really dangerous, as far as Mami knew. People just wouldn't believe her. But she didn't know about the extent of magic aside from other girls like her who fought witches.

"..Is it obvious?" Because Mami had only ever heard magical girl from Kyubey, nothing else. She didn't think of herself as a mage or a magician or anything else she might have heard from in stories.

But then again, Mami was going to follow Rin anyway, seeing how her thing was done for the night anyway.