(Tigard, OR)  --  A 17-year-old is facing charges after being accused of seriously injuring a woman in a knife attack.  Tigard police say Daniel Ortiz is being charged as an adult with attempted murder.  The attack took place Saturday night in the area of Walnut Street and 114th Avenue in Tigard while the 59-year-old woman was walking her dog.  The victim remains in a hospital.