Hermione couldn’t  stand  Harry’s so-called "obsession’ with Draco Malfoy, not when he truly had no idea what a real obsession looked like. She knew everything there was to know about Draco because she  cared—he was her number one priority, her first thought in the morning and her last at night. She didn’t watch him because it was "convenient’, or because he’d made a snide remark, she did it because her entire world revolved around him.