Story Again

[bmshirts]

Hi, it's me - old brain dead again! I once read a story along the same lines as Nobody's Angel but shorter and sadder. Ennis shares an apartment with his brother and sister. Jack lives at home with his parents.  After Ennis and Jack get together, Jack reveals that his father is a cruel bastard who beats and tortures his son when he can. One weekend when he is going to be alone in his house with his father, he takes a switchblade that Ennis had given him and taught him how to use, and he kills his father. He shows up at Ennis' place with his shirt covered in blood and tells Ennis what he's done. Ennis gives him some clothes to cover the blood and grabs a jacket and leaves with Jack. They run away and hop a train and the story ends there. It's not Boulder Creek or Camp Wilderness. Anyone know the title and author?
It's hell getting old!!!
Thanks. Carole