She puts them on, she takes them off. Sometimes they are make-up, like the wings on her back she had in that odd movie about assassins and curving bullets - sometimes they are real.
Her body. She can afford the removal, and the necessary down time to remove them.
Personally, I think a well done tattoo can enhance someone. Don't like them over done - full sleeves tend to be offputting, but again not my choice.