That does look suspicious. I would take her in to have that looked at by a vet. If you happen to have pics of her which show the tail looking the way it did before you noticed the change, that could be helpful. Information about any changes in her appetite or behaviors, and when these were noticed will also be useful. If you haven’t already got an exotics vet who can evaluate her, this can help you to find one.
Best of luck. Let us know how things go.