I'm sorry, but anyone entertaining the idea that she's NOT going to be doing AV at some point... The immediacy of how fast she went to this stage of her shoots only shows you're living in a fantasy. The whole "She's only doing it because of financial circumstances, and would never... blah blah blah", is pure cattle scat, and irrelevant.
While she might not have gone the route of Miu Nakamura/Mizui Maki/Kana Yume, she's headed for the same place (as it pertains to AV). Whatever it was that forced her to leave gravure in the first place is the crack in the dam of her eventual AV career.
The collar and chain behind bars bit? Sucking on a sausage? Sure there are other gravure models who do this and worse, but for her to jump so quickly into it shows a bit of desperation that we've all seen before.