Hello!
I completely understand it is worrying. What are the measurements of her cage? To be honest, it may just be a case of her wanting to chew on that specific wood which is a bit of a problem haha. I wouldn't recommend putting something on the wood to stop her chewing it because this could be harmful but maybe make some DIY toys and place them in her cage. There are so many tutorials on YouTube if you just type in 'hamster treat toy'. This is so she can try and solve how to get the treat out of the toy and then have a reward at the end which would stimulate their mind and also give her something fun to do! It'll keep her busy for a little while. Another thing you could possibly do is put peanut butter on her wooden chews that are already in her cage which will make her want to chew those instead so she can have the peanut butter. Obviously give it to her in moderation because it's quite fatty though
I hope this helped and best of luck!