The last time you shared life together, you were playing with her. What better way to say "goodbye". Sometimes it's not important to know "why" our dogs leave us but to remember that they shared our lives with us and gave us joy and we, in return, gave them a life. So many dogs never have that opportunity.

Sasha sounds like she was a wonderful girl. Remember that last evening playing with her forever. That will be her gift to you and your wife.

My sympathy and total empathy,

Jim