In RL Sophia will be raped if she were some bimbo, but in this case, I highly doubt. Aiden got protection from his uncle, but other gang members don't. They are not stupid, and they know that in court Sophia will be seen as respected teacher who got herself into trouble because of blackmailing.RL Sophia would be raped several times by all gang members. To do this, Aiden must determine to what extent Sophia can be humiliated. Otherwise, he won't be able to control his gang, and if he tries, he might discover that he has a strong competitor like Andre who could challenge and then overthrow Aiden.
It's most likely that this is some Aiden's plan to show Sophia that he is a men of charge, or probably to accommodate her to be in present of gang members. He probably have a deal with gang members to wait for the right moment, to corrupt her more and to make her obedient and submissive woman.