Oh no, I'm so sorry - it's a terrible feeling, not just to have lost possessions but knowing someone was there.. Hope they are caught and your things are returned but I know that's not always the case.
I'm sure AMHR will be able to help you replace it if need be. We had a World trophy fall from a high shelf and break - luckily didn't fall on anyone! - and were able to replace the horse on it, for a cost of course.
Jan
Jan