IMO this is possible. That might be how he made money.
16 years ago I lived in a duplex. The main floor wasn’t shared but stairs to the downstairs was shared. In the basement there were doors on each side of the bottom of the stairs (both with locks).
When I moved in, my neighbors were a couple with 2 kids. Seemed nice enough. Until the husband invited me down to look at their side of the basement. He opened the door and proceeded to show me a bed with cameras around it. Then asked if I wanted to make money. I was horrified. That is how that couple made all their money. His wife got in front of the camera and did whatever whoever was paying her told her to. She told me if I did it sometimes you could get paid $200 for chewing on a piece of gum.
They seriously creeped me out and wouldn’t leave me alone for 2 weeks so I told the landlord, he saw the room and kicked them out.
I’ve wondered if this scenario was possible with ML as she wanted “online only” SD’s. She had roommates so it’s entirely possible she met AA and that was the place she might have gotten on cam for whoever wanted to pay her. If girls were coming and going all the time it could’ve been an arrangement like my old neighbors. They had girls going in the basement for that very reason.
The only problem with this theory is why get picked up at the park? I can’t find one explanation that makes sense. Maybe he told her he had a new location...
IMO always
ETA: the biggest reason I think this is a possible scenario is the CAMERAS WERE NOT HIDDEN. If he wanted to secretly film, he would have hidden them.