The Rama in Orach Chaim 696:6 says we do not send Misloach Manos to an Aveil. The way people send is to send it to the family, rather than directly to the Aveil. If you do not know anyone else in the family can you still send it to them?
Suppose someone is in Aveilus and a person shows up delivering Mishloach Manos how should he respond?