And oh god, here come the checks.
Sense Motive:
(1d20+6)[13]
Knowledge (Arcana):
(1d20+10)[14]
Knowledge (Local):
(1d20+3)[21]
Knowledge (History):
(1d20+7)[9]
Knowledge (Religion):
(1d20+9)[26]
All above are general rolls to sound out the current situation and those unknowns within it. Now the fun part. Ilvaria will be idly concentrating on her Detect-Magic-o-vision for the entirety of the night. Considering the time available, I think it quite reasonable for her to take 20 on every single one of her spellcraft rolls.
In other words, magic equipment list of Knot Hibernal please?
Ilvaria is perfectly trusting of her allies. But it never hurts to know what they have at their disposal. And being trusting towards someone is quite a different thing from not classifying someone as a possible threat.