Pain is perfect?

I just can’t seem to accept that pain can be good for me at all. My service dog died in a tragic way. She suffocated while I was gone. Now the pain is overwhelming. I was asked by a coach how this pain could be perfect. I cannot think of a single reason for it to be perfect. I can wrap my head around that it just may have been her time to go, but this pain I feel can’t be perfect. Please help me understand what that question is supposed to help me see? The pain comes when I think about her being gone, dead, out of my life. These are all facts. But they are the thoughts that bring in pain so powerfully I can’t even breathe.