That story somehow got overlooked by me for 2 years, I've just found it. And heck, it's great. It clicked with me immediately. It's got that betrayal angle, which I hate usually, but here it's kinda justified, so it made things hotter. It reads more like a thriller with a kinky porn vibe. The characters are built perfectly within a short story limit, their actions are following the internal logic. And I hate to say it, but in Nel's shoes I'd probably do the same in the end.
Incidentally, I thought about writing my own story with a similar plot, but now I won't. I can't hope to do better.