Well, I don't think I have put the nuts in as an immediate reaction to the chewing, but I will remember to be careful to make sure she doesn't make the association. She did have a rubbed spot on her nose the other day but that has healed and furred back over..she has a little white patch there now
She also chews in the exact same place (at the moment). I will lower the ledge she sits on so she can't reach and she if she goes to a different spot then I can try and cover it up like you suggested.
Ty for the ideas, never thought about the association but you are absolutely right, there is no reason why a hamster couldn't do that when even creatures such as goldfish will attention seek.
I'll let you know how it goes