In the evening,
try placing tinfoil or crinkly cellophane on the floor (concentrate on possible hideouts, doorways, and around the cage or food), turn out all the lights and sit quietly.
Not exact matches
Try placing the scratching posts in front of the object she is scratching, or cover the object with
tinfoil or double - sided tape to discourage her.
Alternatively, you could
try setting up a similar arrangement, but in addition
place some
tinfoil around the areas where you think your hamster may be hiding, such as around any holes you located earlier.