Heather Hills

Heather Hills is a teenager in Rodrick Heffley's grade. Greg Heffley has a big crush on her. In the second book she babysits Rowley while his parents were gone. She was replaced by Leland as Rowley's babysitter the day that Greg prepares to flirt with Heather while she is babysitting Rowley. Greg always tries to impress her, but she barely pays any attention to him. Her younger sister is Holly Hills, who Greg also has a crush on, (which eventually fails.) She is a lifeguard at the public pool in Dog Days, and Greg attends to her every whim while there, but she pays him no mind, except when a kid vomits, and asks Greg to clean it up.

Trivia

 * In the online book, she is known as "Lori Matthews."
 * Why Leland was replaced as Rowley's babysitter is unknown, but uncharacteristically, in the online book, it states that she was fired for smoking outside Rowley's house after she had put him to bed.