Mary Ann Cotton Doll?

Good Afternoon,

I am full of energy today; it is clear and beautifully sunny. I am asking the help of my readers at this point. About 30 years ago, when Lolly's Doll Museum in Galena was open, I was talking to Lolly's son about a doll called "Hanging Mary," that stood on the gallows, fell through a trap door, and hung as the British National Anthem or funeral march played. I think this may be a doll representing Mary Ann Cotton, who was a poisoner. Does anyone know where I can find a picture of this doll or information about it? Thanks, and have a wonderful day today and always.