This theory doesn't surprise me. After reading about the Texas serial killer that specifically targeted elderly women, how he positioned himself to be in a place where these women lived and how he watched handicap parking spaces at stores for some of his victims and then followed them home. The only woman who survived his attack, gave a video deposition in which she told how he knocked on the door and when she opened it, he immediately pushed her back into the apartment, grabbed her pillow and began to smother her. She stated she did not have the strength to resist. These women were easy targets for him, he took their jewelry, sold it on offer up. These were active women who had friends and family and lived in what was supposed to be safe retirement places.
There are soulless individuals walking around in human form that see our elderly women as prey for whatever they have to have to complete their evil.
MOO
Texas Serial Killer