You send a DM, "she" messages back and tells you to buy some pics, promising they're better than what you have. You buy them and "she" sends them and teases more if you spend more money. You buy the next set, maybe they're a little more revealing, maybe not. Each pack is more expensive than the last, each time the messages tease that the next set will be even dirtier or whatever. You can get pretty deep in the hole just buying pictures 1-5, 6-10, 11-15, 16-20 of a set. You might get custom stuff if it's actually the girl messaging you, but often it's just a tactic used by agency employees/paid chatters who run the messages for the girl. No idea exactly how Noemie runs it, but that's what a chain is (I think).