I have no idea if she's with an agency, but some creators work with an agency. You obviously don't have to, but they might help you promote, do photoshoots, etc in exchange for handling pricing and what kind of content gets put out. A lot of the times when you see creators on OF do a lot of scummy/scam DM PPVs, it's usually an agency that's pushing it out. A good example of this is Stella Chuu.