[yesthatjallen]

No one explained why the front door was open to her house.

I don't know. Was it hot that night? Did she open the door to get a cross breeze going?

I do that all the time. Not at 2:30 am but I'm not her and I don't know what her motivation was for leaving the door open.

[willyd]

some houses in the south only have a/c in the bedroom as a window unit. On a cool night you might leave the front and back door open. She could have left it open accidentally.