Agreed, I think most people would call 911 immediately if they saw lantana man outside the front door. A single woman, would not open the door, for sure.
Example, Amazon delivers at all hours, most people just get the package in the am. Why go to the door at night? Most people believe night time is private time.
I also agree, she probably did not hear anything ( hearing aids out, sleeping), if camera alerted on her phone, she did not hear or respond to it.
It makes the most sense intruders came in the back, surprised her in bed. Most logical way. JMO