When meeting Fawn, or when the event shows where you can enter Fawn's apartment without knocking on the door, enter, and sleep beside her.
after that, refuse to leave and it will trigger the rest of Fawn's route.
then go to the club and don't run away,
Do all the events after chosing Don't run away
it req high tol but you can just saw your safe word.
after the event, you're back in your apartment, go to fawns apartment to find that she's not there.
then go back to the club and talk to the guy beside where fawn's spawns.
then when he mentions about ccards being sold, go to the slum's market, buy all the cards and to to the don.
ask him about it and he should tell you what to use.
use it to get to New ark upper.
Meet fawn in coledge. from the entrance, take a left, then up to the library ( or caffetreria)
Yeah, after that you do stuff with Fawn.....
stay 1 night with her in new ark and now after that she stays in your apartment.
Is that what you wanted?