Original Commentary

The first draft did not mention the animal shelter. This was added after the arc was written as a way to show that Sofia knew the doctor beyond the story arc where those two meet and that she wasn't just interested in him for physical reasons. This makes her sound like she's been thinking about him and making a move on him for some time and actually has some kind of plan together. -Isabel

Modern Commentary
She thought they had a connection. Honestly, this conversation should have been her first hint that he wasn't that into her. - Terrence