IMO the death was suspicious. From all that I have read and the fact that she died while around Dale's friends, with a drug Dale was arrested for using (i believe or was it meth?) and because he beat her, Dale could have blamed her for being dishonorably discharged from the Marines. JMO He had motive and friends to "erase that problem" too. MOO
So are you saying that Dale put a hit out on his ex by having his friends force drugs on her ?