If you look up Jeffrey Wachner, you'll find evidence about his personality that confirms this event. He's an instrument commercial multi rated buffoon.
You think every airplane in maintenance should have a few wing walkers following it around? I would think that the first step would be to tow the plane on the little yellow line.
You're saying stolen. Having property vandalized or destroyed is not the same as having property taken (stolen).
If someone goes into your house and throws your TV on the floor and smashes it, could you say they stole it? Uh no, not if it's still on your floor.
I don't think there is any question that she was present. The allegation is that she stole the aircraft. Personally, I'm not convinced that a person can steal something if it never leaves the property.