You are SO right! I didn’t even notice that. Thank you for sharing that information!I don't think this is Gwendolyn. The body is described as skeletal, which means this lady was dead for a long time (maybe one or more years since the remains were partial) when Delta Dawn's body was found.
Is it possible that Gwen's body was brought elsewhere by the waters ? I mean Dawn was found in weeds near the river, which means her body probably washed there after she drowned. It doesn't seem like that far of a stretch for her mother's body to be lost.