2nd-3rd floor ladder has been repositioned, yes. You can move it easily. Fido is hiding. Kilian on guard.
Burning the gumpism may be a good idea but bear in mind that some of the original wooden beams are showing, and much of the original stone floors are gone, and have been replaced with logs. You might easily set the whole 2nd floor alight, and then the ceiling as well. (Which means the 3rd floor would go up too.)
Tower exit to the courtyard could be blockaded in a turn. Door is not intact.
The keys are OK, maybe useable. Axe is useless.
Freya thinks she or Anna could probably pick such a lock fairly easily even if the key breaks...especially since she knows what shape to emulate with her wires.
Do you proceed with the burn?