I am not. I would think they would search the whole house then the property outdoors in case she had fallen and couldn't get up, in the fear she was still there (wallet, phone, everything else was seemingly still there) and perhaps unconscious or otherwise unable to call out to them.
MOO when I go to my elderly relative's home and don't find them where I expect to but nothing seems obviously amiss, I look around for them, then on not finding them, call police. I don't immediately leap to well this is odd, must be a crime scene.
The blood drops allegedly found were to my understanding located outside of the home along a walkway form home to drive. Droplets, not buckets. JMO