Waiting for sobriety

A 33 yo female with  a hx of diabetes and polysubstance abuse was found down on the street under the influence of drugs.  She was signed out as "awaiting sobriety". Four hours into your shift she is conversing with the nurses and asking for a turkey sandwich.  She has no memory of any of the events of the past day. except that she was using cocaine. As you go in the room to discharge her she says, "I can't move my legs".  On your exam you find no rectal tone and a sensory level at T10. She is unable to move her legs so you order an MRI. The image is below. What happened to this patient?