Great that others see it too that Sophia is a great character!
To a certain exrend it depends on how we play the game what happens. Edwin and Sophia can connect really well from nerd to nerd!
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
And yes, I know it was partly a test by Sophia and Abel, but our MC is aware of this.
But test or not, Sophia, eccentric as she is, could certainly have sat out the make out session in the blue room easily, but she and Edwin became quite aquainted.
As for even others like Kath being careful when "dat ass" is around, I have the strong gut feeling Sophia´s talents when the lead starts to fly could become really important for our MC on some paths.
Concerning your quote, Sophia is a far better option for sticking your dick in than many other female characters in PC for Edwin. Both channel serious nerd power.