You're pretty much at her mercy. Did you show her the information you have, pinpointing the exact tree it landed in? You might also point out that the drone might not be easily visible from the ground; when my MPP crashed 53' up in a pine tree, it was not visible at all from the ground due to all the branches and needles. Unless you can convince her that it's still in the tree and to allow you to retrieve it, you can pretty much kiss it goodbye.