There’s a snake ID page you can post on Facebook to get an accurate Id. I’m going to say based on the light coloration and pattern that this is not a cotton mouth. They typically get darker as they get older and do not have tan colors anywhere on their color pattern. It’s more of black saddle type marks and a reddish or dark brown “white space”. Also juveniles have a green tail which this one does not which would also indicate if it was a cotton mouth it would be darker though the body. Here’s a simple guid to give your family but please ask them to just leave the snake alone instead of killing it next time.
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