see in 11A - " If you are seen wearing that design you will be asked to remove it within a certain time period. If you fail to follow through you will receive a blacklist until you email us saying you are ready to remove the design."
Hmm, I guess she shouldn't have been banned, just blacklisted :O
"If you’ve sold a design which is illegal OR stolen, we will not only ban for posting but those who wear the illegal/stolen design (as of August 1st, 2018 for those who proceed to wear). The ban will technically be permanent, BUT you can quickly email us at tgmoderation@gmail.com when you are ready to remove it from your avatar."
So ya, she just has to agree to abide by the rules and she can get unbanned. :)