To truly know someone is to differentiate between who they once were, who they are now, and who they're capable of being. Hermione realises the duality of one man as she rectifies what she knows of the past and begins to understand the pieces of who Draco Malfoy is now: a father, a son, and a man.
“I’ll make it worth your while,” she’d said, and who was he to refuse Granger promising him something possibly sexy or salacious.
Or
In which Hermione gives Draco a muggle cell phone and he learns about the joys of receiving nudes.