Welcome to the forums. A one owner coach, especially one that you and your family grew up, and grew old (
) in, that has otherwise been well cared for, is worth more to repair than one that has been through the mill. If the damage is too severe, though, for example if the tree crushed the roof down to the floor, it would never be "right" again.
If that is the case, I would recommend finding a comparable trailer that needs the "stuff" your trailer still has in good shape, and transferring the parts. That way, you will still have a portion of your old trailer with you. You can point to a counter, or the couch, the fridge, etc, and say "that came from our original trailer".