So sorry for your loss.
More prayers for you to cope with your grief.
No one can adequately imagine how close a bond a lovingly married man and woman have after the blessing of a long marriage. 50 years of love continues beyond the death of either person, I believe. That love is still alive. And no one can describe the loss of part of oneself. Look forward to Heaven where Sheila is now beyond pain.
God bless you, Jim.