All bunnies chew. She is just being a normal bun, some like chewing more than others. Give a her appropriate chew toys, untreated wood blocks, even cardboard boxes to get busy with.
Excessive chewing could be a sign of boredom if she doesn't have much toys or time out to run around. Or if her area is cluttered with wires and stuff, bunny housekeeping! Bunnies like a smooth clean living area. In the wild, roots and tubers growing into their burrows get chewed up to keep the area clear. So bunproof your home to keep things you don't want her chewing away.