No, it didn't.
There was one person that night with Terri who had the means, motive and opportunity to cause her harm.
Too bad there isn't any evidence of a crime, eh?
TS suffered cardiac arrest. It happens, even to young people sometimes, for no apparent reason.
They didn't find a cause with Terri.
AND if pressure were applied to her neck arteries long enough that would account for her the brain damage and cardiac arrest.
There wouldn't necessarily be any outward sign of this.
Of course, she could have been burked but if that were the case then I think there would possibly be outward signs.