Mary Kristene Chapa, 18, is in the hospital recovering from being shot in the head on June 22 at Violet Andrews Park in Portland. Her girlfriend, Mollie Olgin, 19, was also shot and was found dead at the scene.
A close friend of Chapa's told ABC News Chapa remembers the night, though it was unclear whether she had been interviewed by police yet.
Police said Thursday a witness has come forward and provided a description of the suspect. He is a white man in his 20s with brown hair who is about 5-foot-8 and weighs about 140 pounds.
"There continues to be no evidence that the attack was motivated by the victims' sexual orientation," Portland Police Chief Randy Wright said.