YA Romance where the heroine is attacked/ SA while on a run that her BF did not join her on. She leaves home and her BF and only tells her dad where she is going!

[Kennedy]

They are neighbors and have just graduated high school. They normally run together but he missed this run. She is attacked/SA while on her run. After she recovers, she leaves home and only tells her father where she is going. Her BF searches for her. Even sneaks into her house to try and figure out where she went. She was very close with his family. They are all heartbroken. He finds her and brings her home.