I am so, so sorry to hear of your loss.
This happened to an acquaintance of mine. They had a yorkie who didn't go near the pool for ten years... and then one day they found her drowned.
I don't know if this will help, but I'm sure that Sweet Pea found so much happiness with you, and as awful as her death was, it can't compare to all the wonderful times she had with your family.
Please be well.