If it rains, and your talk with the neighb goes bad, will we see more progress on the 32?
It is amazing how a little styrene can help.
On a side note, some good advice given here. You and especially your mom have done nothing wrong but yet have been wronged. If the talk doesn't work, file a complaint with zoning. Chances are he did not pull a permit for the shed or excavation. Video and local news stations are your best for quick results!