[@Errant Son] The thing is, I don't think it would quite fit for her to just go and punch him in the face. XD

Would he start a fight if she got close to him, on the stairs, with a gun pointed at his head?
As for a reason to get close in the first place... Is he the type who would have participated on raids on Eretol camps, i.e. would she be able to vaguely recognize him from somewhere?