My bad, I got the plan switched around. So yeah, they will leave you there.
I do believe that there is a Mentem Requisite? Edith knows the spell well enough, but her casting total is not the best and she will loose Fatigue.But it works!
Oh spirits! Hear my call! By the hoary hoasts of Haggoth, I adjure the bones of Lord Featherbottom! Give up your spirit and subit thyself to the Wizard's Inquisition!
And with a mighty groan that echoes with the dust of a decade of death.
Whhhhoooo summons meeee?