Ive just revisited that in a new playthrough.
The reveal scroll is in the chest on the right side, just behind the entrance.
So i guess, if you are burning the door down you could maybe destroy the chest and maybe the spell too?
That should not happen and if it does then its a bug.
Never happened to me.
The book shelf above that chest contains her diary and on the table further inside, on the right, there is a letter from Conduit. Those do not help with revealing the entrance to her lair.
The spell has been slightly changed from the beta, before it looked just like a blank scroll, now it has a face painted over it.
Im not sure how you can loose it since you cannot sell it as quest items dont appear n trading - but in the other thread someone mentioned maybe accidentally sending it to Homestead as a possibility.
Of course, at that time of the game you have no access to that part of the homestead so...
reloading earlier save it is.
