@lovejoy,
I saw the film a year ago.
1. Don't recall really. symbolism of past and future. Trying to get his daughter to understand his past. Trying to connect with his daughter
2. People will often find something personally shameful that others won't think is.
3. See 2.
but.. as a young man having to admit you had an affair with a Nazi war criminal when you were 14 might be hard to do
as he got older and a lawyer, it would be hard to explain why he didn't come forward earlier