I am sorry for your loss... The passing of family is one of the draw backs to aging. I am thinking and praying for you and your family.
I try my best to make funerals fun (yet respectable), remembering the goofy, stupid things we did. I really want my funeral to be a stupid party- because I'm the king of goofy stupid random acts of fun...
You can not change your past, but you can ruin a perfectly good present by worrying about the future.