I just had the same interaction with Twitter. The issue for me was use of my photo, along with those of Miss Ria Harpsichord. Even though the imposter is not using my name, twitter still wants identification, so I am attempting to use other options on the "report" menu. With gross sub accounts, I've had the best luck reporting as spam, though there is a "this account is fake" option. Has anyone had success with this?

If you are willing to report, the handle is @ MarieDominatrix
Much appreciated