While you bring some interesting thoughts/theories to our discussion table, there is a flaw in your argument. You assume that Sophia "put on" a nerd persona to lure us in, but that is not the case. Sophia Lundgren can socialize, but it is FAR from her forte. Whenever we see her in the game it becomes quite obvious that she is an eccentric nerdy genius, blunt and straightforward. She is not honey trap material, because even those smitten with her can still recognise that she is an amoral, the end justify the means, calculating woman, who can be very dangerous when needed.
I think it was
Ottoeight who said paraphrased: Even a true sadist like Kath becomes cautious when "dat ass" is around. With reason, since if Kath´s wet dream is being like e.g. Freddy Krüger or Dean Corrl, Sophia is more like Agent 47, the sniper rifle waiting for you, the garotte in a foggy night or the poisoned chalice.
What I find a lot more alarming in the game is that Sophia considers Chuck being scary! If a person as amoral and dangerous as Sophia tells you someone is scary, you´d better listen carefully!
Coming back to the "test" done on our MC: It is also possible for us to connect well with Sophia and her starting to warm up to us (at least a little). I am one of those hoping for a romance path with her, because worming your way into the cold, calculating heart of Sophia Lundgren is certainly a different experience than a more standard romance.
That said, I consider Hana, Felicia and Sophia by far the best romance/love matches for us, followed by Mina and Daria, our Latina head housegirl.