wait so you know how to 'gain Cassie's trust'? how do you do gain it?
go to slums, dont pay the hench man, sleep, go to slums.
Don wants to speak with you (by prompt of the henchmen)
dont pay him, instead do dirty work. You now have to turn in cassie.
go to cassies safehouse, and just sleep, then shes gone. go back to don. either take his money or dont. i didnt.
now from here you have to find a way to get her out of there.
its a long thing that took me literally a day to figure out.
persons of interest, Fawn, Sammy (bath house), Lin-Lin (massage girl), Arlene Police officer. then you connect the pieces.
I HIGHLY RECCOMEND HIGH STATS. it is NOT easy.