If she continues corner digging even with the cage liner being removed and if you add more substrate,enrichment,and address other issues with the cage setup consider that the cage just might not be big enough
It is normal for hamsters to dig,but there's a difference between that normal digging behavior and obsessive corner digging.
Replace the bottle stand by putting a smaller bottle up high where just the spout is accessible by attaching it to the side of the cage with industrial strength velcro.Bottle holders and stands are climbable and could then let a bottle get chewed or let lids and such get chewed which is a problem.
When it comes to chewing everything,just make sure the material is either chewproof(ceramic,terracotta,etc)or made of a safe to chew material.This means no plastic items,no questionable metals and such,and definitely no fabric.As long as you take precautions it isn't a problem
