Alright, a witch hunter then, growing suspicious of Mirela.

If we want comic relief, perhaps the non-magic student on the 
same floor could be into some weird, non-magic form of wicca, trying to explain to Mirela how nature works and getting it all wrong. Like she would see incence and immediately start waving it around to purify the room, except Mirela knows it doesn't work. But of cource she can't say anything. Or the student could see candles and draws Mirela into a seance where the girl is convinced she felt the presence of the spirits but Mirela knows absolutely nothing happened.