Dan Winkler also said that despite what previously had been reported by a family friend, he did not forgive Mary for the shooting because she did not tell him she was sorry.Jesus had some thoughts on this sort of thing:
"For if you forgive others for their transgressions, your heavenly Father will also forgive you. But if you do not forgive others, then your Father will not forgive your transgressions." (Matthew 6:14-15)
"For in the way you judge, you will be judged; and by your standard of measure, it will be measured to you." (Matthew 7:2)
My general approach to these passages (and those like them) is that I want God to be as absolutely forgiving with me as He can be, because I need all the forgiveness I can get!