It was deemed to be an accidental drowning.
It had been a terrible tragedy. Although, some might say it was an accident just waiting to happen. As was so often the case, she was blind drunk when she fell into the pool. She had never learned to swim. Her husband was beside himself with grief when he found her floating face down. Her blood alcohol level was through the roof. No autopsy was required. However, someone knew better. There had been a witness. He had been there. He had seen it, but all things considered, there was not a damned thing he could do about it.
But, hey! He thinks, as long as the hand that pushed her in. keeps opening tins of cat food, who am I to complain?