I can only echo what's been said earlier... our hearts and prayers are with you during this difficult time. If there is anything we can do to help, just ask.
I am so sorry for your loss of your wife. Sometimes it is difficult to understand why we lose our loved ones. I I am praying for her and your family for some comfort in this difficult time.
I don't know the words to help you at this time Don, but perhaps in the future you will read these posts and gain solace. I wish your wife God's speed, and peace to you as soon as possible. Prayers sent.