I might be misreading your post. Are you asking how often you should ask your wife to forgive you?
If so, I would say don't ask her again unless the topic comes up in conversation. You asked, and she answered. To keep asking is disrespectful.
You have done enough to carry on with making amends with others.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16