Hoping this recent news will bring SP back home.
I've been pondering the sheets. If the sheets were missing and not just bad reporting, and her parents' room was directly across from hers, I'd imagine being stealthy and having plausible deniability would be important if I were going to run away. It was raining so I'm taking that into account too, since not only is it more quiet walking on wet ground, the rain, even light rain could potentially drown out some extra noise. If someone were trying to be sneaky, I could see opening the window and tossing out a sheet to protect stuff from the wet ground and possibly drowning out the noise of anything being tossed outside, then throwing another sheet on top to keep things a bit drier. If at any time parents woke up to check on things, you could easily say you were just listening to the rain or thought you heard a noise (if you have farm animals, opening windows and doors at all hours of the night isn't exactly a rare occurrence). Now everything is outside waiting for when parent(s) go back to bed. Hop out the window, grab the stuff, and make the mad dash down the road to what I suspect was a waiting vehicle.
I don't see a cut screen at all. I see a typical screen that has been stretched out a bit leaving the weird "frame" around the outside edge combined with reflections and shadows from the glass window.