If L&P doesn't know what to do with Bennett:
Apart from the sexless options:
Sophia is corrupt enough to ask the janitor for help to trap Bennett.
The janitor still owes Sophia one after all.
She asks him to film Bennett, blackmailing her.
You don't even have to show this whole plan.
Sophia, after fucking with Bennett, shows him the video.
There, she can tell him that she demands that he disappear from the city otherwise this video will be sent to the national education system. His life as a teacher will be over.
Bennett can try to threaten her and Sophia can tell him that it's his word against hers and that besides, she knows a very good lawyer.
Everything will be played by bluffing. Bennett will eventually agree and disappear.
End of Bennett's story.
Sophia will be able to thank the Janitor in a very nice way or a bonus
When you can't fight a system, you sometimes have to use it to your advantage and turn it against it.
And finally, result. We will have a Sophia who will have acted on her own, without influences.
Here
I'm not saying that this scenario should be followed to the letter but if it can give some ideas ...