>>51316473Charm is pretty much implies to be the ancestor of these two. She uses Gengar and Rhydon and specifically stated she came with the Jubilife Village settlers from Kanto to start a new life or something. It couldn't be more obvious that Agatha and Bertha are cousins at the very least, or maybe ever sisters. It was even teased before PLA that it's obvious they're related by blood but I don't remember where that was discussed. A guidebook or an interview I think.
