just a couple of points:
when the trial first started, one of the CSI members testified that the camera strap was still in the camera bag, and in its original wrapping.... meaning it was never used.
they are saying the camera was upside down in the dragging picture, because when they took the SD card out of the camera, the picture was TAKEN upside down, meaning the image they retrived from the SD was upside down. The camera most likely got scooted (is that a word) around the floor when she attacked him and when she was bringing him back into the bathroom, she backed into it, and the shutter button hit the floor, therefore the picture was upside down.
Not that I beleive what she says, but there is some truth to her lies.
I believe her when she said she didnt know how the camera settings worked. TA had just gotten the camera, and she hadnt seen it yet, which is probably why they used his camera for the pictures and (supposedly) her camera for the movies, cause she couldnt figure out how to work the settings and such.
That part, I do find believeable.