The impossible quest

Do you know how hard it is to find out what was on TV in December 1990 about 3 women, possibly witches and most likely a cartoon?

VERY! Like practically impossible. Especially when you have no memory of it at all. Yet apparently this was a very important incident. I've spent the last hour or two searching t'internet and I still have no idea. Fuck-a-doodle-doo... It's times like these I wish we'd kept the TV times.