Dean, my sincere condolences to you. Barbara has been an integral part of your life for most of your life and this turn is a real shock to the system. By all means grieve whenever you need, but also do as I do: keep the memory of that honoured person alive with memories of things past that make you smile. My dad has been gone a dozen years now but I think of him every day and I smile when I remember the stuff we did & the lessons he taught me. No doubt you have a lifetime of memories to draw on.
I was digging through old volumes to see if I had a vintage picture of you two because I know you have posted such in the past. No luck. Anyway, lean on and accept help graciously. It will be an adjustment for you. Try not to keep that house empty, because it will feel that way if you are by yourself. It would be wise to establish regular check-ins on your well-being at home. You also have many friends here on the site & in the Chevelle community. A rolling stone gathers no moss.