If you use Joiplay you should disable the range visibility plugin.
Otherwise just use the torch from the Lumberjack house.
If you mean the statue that has the letter with evidence under it, you are done there. Present it to the baroness (the one with the green dress who is the wife of the false baron) to blackmail her into "betraying" the baron. The other statue has nothing hidden.
The hidden room I mentioned is for the baroness manor after you solved the quest.