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If she is eating a regular mix then she will be chewing enough to keep her teeth at a good length. Not all hamsters like things like meat and egg. They would be unlikely to find cooked meat in a wild situation and would be more likely to find live insects and grubs as a source of protein. This is however not essential and they can get all they need from a good quality hamster mix and fresh fruits and veg. Some hamsters will chew happily on a dog biscuit so she may like that?