Sometimes it seems like rabbits learn to dig, and realize it’s so fun and want to keep doing it.
You might need to remove the rug from her pen at least. I’ve had some buns that just cant have blankets or rugs in their areas, because if they have 24/7 access they will destroy them. So I had to opt for cardboard, seagrass mats, etc. You might need to put something like a piece of linoleum down to protect the carpet if she moves on to that. Paper mats can be really nice for them to destroy too (although it makes a mess).
My carpet chewers really have liked to shred phone books, newspaper mats, and cardboard cat scratchers. If there seems to a specific spot she’s obsessed with, you can block that with a ceramic tile, as buns tend to have “projects” that they work on.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.