Um, yes people do cast spells, and that’s one of them selling the service.
How effective each person’s spells are, and what all the repercussions may be, vary.
(Of course, here you will hear many answers from people very very invested in protesting that it’s absolutely impossible any sort of magic ever existed anywhere, and they really truly utterly know that for certain because materialist skepticism so utterly objectively manages to prove this negative despite that being a logical fallacy. Which is . . . not only very ironically non-scientific, but even more ironically, a kind of spell in itself. Ah well.)
I don’t know her so I can’t directly answer the question, but I would be skeptical and wary.