you don't get foot fetish until after the competition. You should be fine, I only had a handful of stuff unlocked for her and I passed it. If you are still worried, just save right before and load that one if you fail.
Thanks, but I'm rather pedantic, so I want to achieve everything possible.
I found an older savegame on a backup stick bevor ich bought Jin, any hints when or by what Lin's anal defloration is triggered? If it is still possible in my older savegame, I would play trough the rest a second time. If not I would chose between a complete start over or staying with the stat I had.
Thanks - then I musst have missed it. I got some save were I sneaked into everyones room with Maria. After that i never saw the Laptop again.
Well I need to start over then, since there is a skip function I could do it in a 3rd of the time because I remember the dialogues quite well.
~edit
Thanks to @hagemage for the knowledge of the Savegame Copys in %AppData%, I was able to recover some older saves from my nightly Backup.
Having your info @FtwDan too I should finde the nearest point available.
Lin will ask the character to give her anal sex in her laptop scene where she is viewing the porn. I think the optiion either comes available then or shortly after as she will ask for more anal (at least the little buttslut did in mine) Haven't got to the contest yet and she has had anal sex 25 times already. Everything stat wise on her is at least 20 except handjobs and footjobs. Hand jobs I stopped at 12 as she was already a pro and if I recall hanjob isn't a big deal with the contest. Her slutiness is well over 100 already. Just keep at it as a lot of stuff just randomly pops on its own to progress the story. Or at least that's how it seems anyway. I ignored almost everyone else and just concentrated on building up Lin from the getgo. Kali is the only one I have finished all levels of dungeon with other than Lin and Jin so far. Started training the little bitch Ash in there recently but not far with her yet.