As far as her website and videos go, it's possible that DC would turn a blind eye to what shes doing, assuming the Wikipedia section on Maintaining Trademark Rights is accurate:

It is not necessary for a trademark owner to take enforcement action against all infringement if it can be shown that the owner perceived the infringement to be minor and inconsequential. This is designed to prevent owners from continually being tied up in litigation for fear of cancellation. An owner can at any time commence action for infringement against a third party as long as it had not previously notified the third party of its discontent following third party use and then failed to take action within a reasonable period of time (called acquiescence). The owner can always reserve the right to take legal action until a court decides that the third party had gained notoriety which the owner 'must' have been aware of.

I'd certainly call what she's doing "minor and inconsequential".