I honestly got the exact opposite of your interpretation of 'rallying on Mysticism' she know exactly when, how, and possibly why, her spell worked and how it won't.We have learned much, little of it good.
The most far-reaching thing we learned is that the Hedgewise, regardless of what secrets they may have, would be nigh-worthless for the Waystone Project. They lean far too much towards Mysticism to be able to translate their knowledge into a framework others can use. Thorek in particular would be utterly alien paradigm.
A shame but better to learn that now than during, or worse yet after, recruitment.
And she all but sneared at Mathy for even mentioning ritualism, then most 'I don't actrknow want I'm doing, just that it somehow worked?' Type of magic.
Mathy doesn't know what they were doing, but they plainly do.