So I am watching "Unspeakable Crime: The Murder of Jessica Chambers" on Oxygen, and I see, in the first episode, the suspect, Quinton Tellis's sister showing childhood pictures. Tattooed on her right hand is the name Eric.

At the crime scene a horribly burned Jessica - hours before she dies -  says the person who did it is named Eric. Quinton gets off because his name isn't Eric. 

Does it not occur to anyone Eric might be nickname for Quinton?