My family sends our sincere sympathy for you and your family in your time of loss.
You have known, and indeed still know, what I feel is the greatest blessing a man can be granted; a true spiritual bond between two souls. The one thing that no man can do is go back and relive a life once chosen. We live our lives not in the past or the future, but in every minute, every hour, and every waking day. You and your mother have obviously lived that time you had together to its fullest potential. It is a divine gift to have had that level of fulfillment in life. You are, and will always be, truly blessed with the greatest of life's treasures.