Well, IIRC, they ran out because the motion lights were going off. Not that they heard noises on the roof. And the fact that they saw no one on the video and motion detectors point toward the ground, not up, indicates that they were the ones setting off the lights after the first time.
I installed motion detecting lights on my mom's house after my dad died. They go off anytime the cats walk around, or possums, or racoons. They go off non-stop. It irritated my mom so much that she installed black out curtains in her bedroom.
The statement was that a figure was seen chasing around the house and that that proves there was a stalker. But no such figure exists.
To me, what leans me toward a stalker is the creepy figure captured minutes after the police left (which could be a neighbor but it looks creepy to me), the moving of the camera right after that as if it had been jarred, perhaps indicating someone realized they had been photographed and tried to break the camera, sounds of someone trying to work the keylock and getting the first digits correct (I would have yanked open the door with a gun in my hand. Seems like a stupidly risky move on the part of the stalker), the fact that, according to Ms. Ingram, Morgan saw her stalker standing there staring at her when she took the dog out to pee, (although taking the dog out in such a manner belies the intense fear she states they were feeling), the fact that, according to Ms. Ingram, she herself actually saw a person running from the house toward a neighbor's house and that the person could have been one of the suspects, the fact that, according to Ms. Ingram, they actually caught someone on video lurking around cars (although that video is being withheld for some reason and it makes no sense why the stalker would know about all the camera positions, hide from them in order to access the house, yet somehow, inexplicably, appear on camera this time, lurking between cars).
Anyhow, assuming everything Ms. Ingram has said is 100% accurate, that is what leans me toward a hardcore stalker.