Here are a few suggestions to consider. Modern CT Death Certificates list the name & address of an "informant." Typically this is the person who is making the funeral arrangements with the funeral home - a funeral home/mortuary is required with each death. In your case it could have been a distant relative, friend, clergyman, lawyer or an employee of the now defunct nursing home. Your relative may have spent some time in a hospital before being placed in the nursing home - her belongings may have been disposed of before she got out of the hospital or shortly after she was admitted to the nursing home. Sadly this happens in "eviction" situations.