Huh. Thats really surprising to me. I asked years ago here in the forum why I couldnt get on her path despite doing all the things. I got specific reply that i first had to lick her to make it work, that i could not pick ask her to blow MC right at the start, then I have read elsewhere that Quinn needs to be the dominant one, getting her way first, and that choice is therefor important.
Anyways, years back I started over a fourth time, picked lick at the beginning and then it finally worked. Since then every time ive gone for Quinn ive always picked lick and ive not failed to get her attentions since.
So its really interesting to me that you claim the code doesnt care about the choice. Every single game experience i have, have demonstrated the opposite.