I might have gone with Tony Rice’s recording of the banks of the ohio, but you have the right idea.
Any bluegrass fan in America could list out a dozen murder ballads without breaking a sweat.
Here is one with a female disposing of her rival sister.
https://www.youtube.com/watch?v=408za7FeNJo
I grew up in the folk music revival, so this is the kind of stuff I listened to most.
Everyone sang them at one time. They were a major part of the body of music people used to sing as they worked. Fortunately Burl Ives saved a lot of that music from being permanently lost.