It was reported "no signs of forced entry." It was never reported as "no signs of a struggle."
Room was in order and nothing appears stolen=no sign of struggle.
"DeWolf’s room was not out of order and no valuables appeared to be stolen. No firearm was found at the scene."
http://www.annarbor.com/news/crime/...gunshot-wound-to-neck-fired-by-another-peson/
"No firearm was discovered at the scene of DeWolf's apartment, which was orderly and where the valuables appeared to be untouched when officers arrived, Detective Lt. Robert Pfannes said in a press release."
http://www.annarbor.com/news/crime/autopsy-u-m-medical-student-died-from-single-gunshot-wound/