Hi, theape, and welcome to the Eastwood Web Board. I hope you don't mind, but I've moved your post here to Questions & Answers.
I'm not sure the movie you're trying to find the name of is a Clint Eastwood movie. The only movie in which he played a cop who had a daughter was Tightrope. In fact, he had two daughters in that movie, but neither was of college age or living in a dorm. The two girls live with their father, who is divorced. The oldest, played by Eastwood's own daughter Alison, is about twelve.
The killer in Tightrope does eventually attack Eastwood's character's daughter (she survives, but is traumatized), but the rest of the plot details you give don't jibe.
Does anyone know what movie theape might be thinking of?