Dear Sir/Madam

I wish to inquire regarding a visitor visa for a friend.

My friend is American and holds an American passport. She is currently travelling in Italy and needs to get a visitor visa for her travels to China in May.

1. Is it possible to do this in Italy?
2. Does she need to be a permanent resident in Italy to apply for one?
3. What documentation is needed? should she be able to apply from there
Thank you in advance.