It's possible the will of magic was only interested in getting Pandora's attention, but it's about to also be handy for eliminating reasonable doubt.
And to be fair, it's completely sensible to ask questions and not just take Pandora at her word. From their perspective, there's darn good reason to be all sorts of suspicious of the scary little immortal girl.
To be less fair, Tedd is definitely biased about what he wants the truth to be.