If the coroner was to do an autopsy on me tomorrow, he would find all kinds of cuts and scrapes on my hands, arms and legs. The cuts and scrapes were not done to me by my old lady, or my dog, or my cat, or my mother-in-law, or a cop, or an alien.
Nope.
Those cuts and scrapes were self-inflicted by me during the course of normal daily activities because I'm not a very careful person and I get hurt a lot. For instance, I think it is both impossible and absurd to try and get on a riding lawnmower without having some cold beer on hand, and a lot of it. After about the 9th or 10th beer..........well.........I tend to get hurt a lot, but in my defense, the lawn does get mowed very quickly.
Another thing that hasn't really been brought up is that Cheryl's husband may have told the cops that she somehow injured her fingers and that information was simply passed on to the M.E.. I think he was simply discounting those particular wounds as having anything to do with her final demise.