I don't think it's really a corruption mechanic. If it is, then I agree with ffive that we're to early in Holly's story for it to be a full on Eva from GGGB, becoming a slutty drug using gang whore doesn't really seem in the cards for Holly for at least another 5-6 chapters.
All of the changes for everyone in ORS has been much more of a slowburn than what we got in GGGB. Pretty much as soon as the first club scene in GGGB, you can have a fully bad Ashley and Eva.
I think I am getting trolled at this point to be honest this are the things that influance the change viable (+1 Ian comment, +1 Ivy talk, +1 cock dildo, +1 give number to guy, +1 marcel, +1 lena shooting)
ivy talk : is very sexuall open minded talk about about ganbangs big diks holly about a random guy that fucks her
dildos : lena looks at a lot of different dildos and sextoys with her
give number to a guy : gives number to a random as fuck boy that ivy want to meet holly to give her more experince
marcel : the bouncer that flirts with holly she get attention for first time
lena shooting : again very sexual
than she change into more sexy cloth and underwear and magicly gives a better blowjob go to ivy classes religiously
and if we have her old game in mind and see all this things ofc holly change is a corruption viable hello???and ofc it makes sense if holly gets corrupted remember (ITS YOUR CHOICE as a player you dont have to change holly with lena)than it makes no sense if holly gets more and more open minded and sexual that she dosent cheat on ian in the long run so the relationship restriction make no sense with the corruption it would only make sense if you as a player chose to not corrupt holly than your ian and holly can have a sweet romantic realtionship with no drama at all and you can be happy and cuddels and than itwould make sens that holly only has eyes for ian and dont want much to do with ivy or drugs or anything in the futre but only than it would make sense