If you wanted to look at it that way, then it is possible.
But why would she limit herself to that of a fortune teller?
Why wouldn't she further her studies with any of the academies available to her?
Or offer her help when everyone went missing?

You are making sense, or as much sense as anyone can in this situation.
And I trust your judgement over just about anyone else's in this matter.

Have you tried it again with someone else?
To know if it was just that one individual's fortune or something applicable to the Summoned at large?