Divorce decree (USA)
This step was far less complicated than it sounds. It certainly helped that they did not care whether this document was official. My mum got me an official stamped-by-the-state copy, but at least I don’t have to get apostille! Woooo! Done.
Mum’s green card (USA)
My mum is a permanent resident of the U.S. The consulate requested a photocopy of my mum’s green card to show that she had not become a citizen of the U.S. I think this is important is she ever wants to apply to be recognized as an Italian citizen. There’s a part of the U.S. citizenship oath that specifically states that you renounce all other citizenships. While they can’t do anything about her Canadian citizenship, this could get in the way of her claim to Italian citizenship.*
*don’t quote me on that. Also, I am not a lawyer.