I just listened to the animation clip with headphones, trying some filtering. I can’t make out anything definitive. I think I hear a loud “Hello,” then a loud “Look!” and just before the clip ends a “Hey look.” The rest sounds to me like street noise, Sophia’s heels on the pavement, and maybe a little muffled banter.
My take from the animated clip is that by the time Sophia descends the stairs and walks over to where she stands in the second preview image, the gang is going to notice that Aiden’s hot teacher is dressed really sexy, and that she is braless. I think they are sure to notice Sophia’s large MILF breasts bouncing and jiggling. We don’t know what, if anything, Aiden told his gang about Sophia’s appearance here. But at this point, I would expect the gang will be drooling over Sophia.
Most of the gang has already seen Sophia. There were 7 present the last time she was there & 9 this time. Your reference to "large MILF breasts" is interesting. Sophia used to be a perfectly proportioned woman until the Dev decided she must have jugs. [For that added jiggle?] Why such appendages should be seen as necessary in order to confirm the MILF status of the bearer remains something of a mystery to me, though I do have a few explanations & of course bad backs & sagging don't exist for the sexier characters of gaming world.
It seems that viewers/players will have to accept that Sophia could turn up looking as she does & get away with showing some skin &/or some touching, both of which would only act as provocation in RL, to go further. It might have been more realistic for this scene never to have been parachuted into PD13. Gangs are not to be trifled with & respond to teasing, especially if coerced, in a predictable & for someone looking like Sophia, an unpleasant way.
Now there's the idea that Aiden will orchestrate everything so that it doesn't go too far. What a power he must have. He's a veritable prince amongst scum. It could be, of course, that the Dev has other ideas as to how this will go down in damp squib mode. [Quite likely, IMO].
So, before the young ones & virgin wannabes send facepalms galore, bear in mind that I've been defending the prescence of this blackmail route for years, at some length & in detail. Thing is, I've also been defending the last vestiges of realism in AWAM. It seems you can't have both.