Maybe she was deceased longer, considering police were hauling a refrigerator out of the suspect's apartment in one of the news clips.
My sleuthing took me here...
A 5/5/2010 ad on page 12B of the Milwaukee Daily Reporter reads that PS Orangeco, Inc. will sell at public auction Boxes/Bags/Totes stored at Public Storage, 4750 South 108th St., Greenfield, WI owned by Steven Zelich. Lot #CO52.
This should be a good lead showing that Zelich has used storage facilities in the past and maybe he has more "storage" out there. For some reason he abandoned those items back in May of 2010.
Online people searches show him as having lived at 6 addresses in Milwaukee, 1 in Brookfield, 1 in Franklin (all in WI) and 1 address in Boca Raton, FL. One search showed him previously employed at US Home Lending with an address in Davie, FL., 29 miles from Boca Raton.