Poor Lee, sometimes her life sounds like mine-one thing after another.
You are a good chicken mom and you have a sweet heart. Snakes are difficult to get rid of, very determined to get the eggs. Short of killing them, I don't know how to get rid of them. There are many Wrens and Bluebirds here who have had their eggs and newborns eaten by snakes. I did have 3 baby Wrens fledge which was a first. 🐓
Hang in there and give my love to Lee and thanks for the mention (working on your request and another post-I am slow).