How do you ask for forgiveness when the girl was not talk to us?

Give her space, don't dare bug her by SPAMMING HER email OR EVEN GIVING HER GIFTS!!! I know it sounds crazy, but don't be a push-over. Girls hate guys who can't let go, and a guy that gives a girl space will be found attractive! Follow this advice, and if you know the girl liked you before th "incident" then this will get her back if you play it right!