If you are ever in need of forgiveness, it is best to practice giving it out freely, so that it may come back to you when you are in need of it. We are all human and we all make mistakes, there is not one person alive that will never need to be forgiven.
Or has HORRIBLE GUILT about a certain time period that she knows she wasn't the "Best" mother she could be, but she was doing the best she could at the time! And She is so afraid she Screwed them up during that time, she can't let go of the guilt!!