anything you say can be used
against you.
1. Trying to minumize the degree of your injury.
2. You can minumize her action by putting good
words about her intention. The case against her
is independent of your action. So if you admit
hitting her, you could be charged with your words
as main evidence.
3. Don't mention immigration to DA, the DA maybe
against immigration. You should use common reasons,
i.e. she is a good, nice person, etc, etc, with
some temper, etc.