Hi, Cloudajo!
The reason I do not believe that it was stored on any kind of cloud is because of the timing.
IMO, if what you are saying about access is correct, the family and/or LE would have been able to get access to all that info the night of the 13th. I would certainly think that the family would be handing over any account info to LE voluntarily for them to look at, especially as the night wore on. If they did access that video per a cloud then they would have known exactly what danger those girls would have been in. I then cannot see how LE would have then made a statement saying they had no reason to suspect that the girls were in any danger other than exposure to the elements.
So, the question for me becomes, if LE does have Libby's phone, why not just play the video? Perhaps the phone was damaged to a degree that made the video not playable, so experts in the field of extraction were brought in to get the video footage.
This is just my working theory, of course, and like everything, open to a better idea. :fence: Your thoughts?