That I would agree with. She is very charming and engaging but clearly very watchful as well. Istredd has been teaching her in beginner's magic and she has been a star pupil, incredibly quick to learn and determined. He can't deny she has a way about her that puts him at ease, which has a way of making him uneasy as well. Paranoia.

"I don't know the right term, they work together and try to do good and have supernatural abilities, but not all of it is magic." Heroes is a pretty strong word but Istredd genuinely doesn't have the right term to use. He just knows that Wanda is rare in her world as a mage, so whatever else people do, it isn't magic.