There could have been an erotic situation to the two college kids if done right. I often think about the softcore flicks that were made in the 80s where people would often lose their clothes in unexpected ways that often bordered on ridiculous - like a woman catching her dress in a car door as she exits, and then the car drives off ripping her dress completely off like it was made of paper mâché. She then has to deal with getting through public spaces while hiding her nudity.
With the two college boys I picture them showing up to meet with Sophia and Patricia at the museum. They're wearing casual clothing like shorts and nondescript t-shirts hoping for a relaxed time with the women. The museum is only lightly populated, and they progress nonchalantly towards the end of the museum talking about the various paintings, sculptures and exhibits. As they start to make their way back to the exit, the boys suddenly trip on a section of wet floor that wasn't cordoned off and catch their shorts on the edge of a stair railing ripping them in the process. Falling onto the wet floor the combination of the tear and the water quickly rendered their shorts unwearable as they basically fall apart. Of course, the boys don't bother wearing underwear on such a nice warm day and find themselves totally bottomless in a public place. Startled by the whole situation the horrified boys each quickly hide behind one of the women while the women do their best to try and stay in front of them to block anyone from seeing them in their bottomless state. Not before Patricia - and Sophia- get a nice eyeful of what they're packing of course. Currently no one else is close enough to notice the situation, but they realize it would be impossible for them to go the same long way back to the entrance without the boys nudity being noticed. Noticing an elevator nearby the 4 quietly, but quickly, shuffle their way over in the hopes of being able to get in before anyone notices them. The boys both know the elevator is generally only used by those who come in from the underground parking garage used by the museum, but right now it's their only option of being able to get out unseen. They figure they can get down into the garage, hide in a dark corner behind some cars and let the women go out to get their car and come back to pick them up.
Once inside Sophia quickly tries to close the doors, but before she can someone runs up to hold the doors open for his group. Next thing you know a dozen people start filling the elevator and Patricia and Sophia immediately move backwards towards the rear corners pushing the boys with them. Soon the elevator is packed, and the boys are pinned between the walls and the ladies. The group is busy talking amongst themselves of all the exhibits they've seen and barely notice Sophia or Patricia. As the elevator slowly starts to move the large crowd constantly squirms as everyone tries to jockey for space. This causes both women to slightly shift as well and both boys quickly get erections with the constant rubbing of their dresses against their cocks. Patricia particularly starts enjoying the situation and subtly shimmies her ass against the boy behind her wanting to make this an enjoyable encounter he'll never forget. She feels his cock press against her clothed ass and reaches behind her with both hands gently raking his balls with her nails. Sophia glances over and sees what Patricia is doing. Patricia responds with a wicked smile and wink. She's stunned by what she sees and what she feels pressed against her. Frozen with fear the boy behind her, not sure what he should do, grips Sophia's waist to try and stabilize himself. This only stops him from swaying from side to side. The forward thrust he's been going through is now enhanced and soon lust completely overrides his senses as he presses his cock against Sophia's ass forcing the cloth to mold to her ass crack. Before long both boys erupt spraying the backs of both women and trying to muffle their ecstatic cries. Unable to do anything except react Sophia allows the boy his joy while finding the whole experience strangely arousing to her as well.
Eventually the elevator stops, and the group exits quickly followed by the women and boys. With the boys staying hidden the women get their car, come back for the boys to take them home and have a rather embarrassing conversation on the way back with the boys covering themselves in shame. Sophia arrives at their house where the boys are able to enter through the garage. Covering their cocks in embarrassment, the boys quickly exit the car and run into the garage and into the house. Patricia leers after them watching their bare asses bounce from the exertion. As they drive off Patricia turns to Sophia shrugs her shoulders and laughs at the absurdity of it all, while Sophia has her hand over her mouth stunned and conflicted over what she's feeling.
This could all take place during one update. A simple and fun way to show the continuing erosion of Sophia's morals. Of course, more could be added, or subtracted or even amended. It's just one idea of how side characters can be used for Sophia's benefit.