Do you remember “The Witches” by Roald Dahl? There was a movie and a book... kind of geared towards children- but still pretty PG-13.

Anyways, I kept picturing the covenant of witches from that story...

Except that story is much different from yours. The witches in Roald Dalh’s story looked like beautiful woman- but they were actually wearing masks.

Instead of feeble old women...

I still shudder when I think about witches...they hold a certain place in my heart. ...a very dark terrible place :( lol