From Discworld MUD Wiki
Not very Auriental in her dress or bearing, Mama Diksha is one of those figures whispered about in hushed tones, and even then, given compliments, on the off chance that she might be listening. She is a massive woman, the unkindest rumour saying that she used to cook for a tsimo stable, but yet she has a knack for slipping unnoticed into the side of peoples' vision. She runs a small shop now, where she sells charms and baubles. She is in good shape. She is standing. You can't help but notice thirty-five warts upon her face. Wearing : a pair of gold-trimmed sandals, an extra-large Happi coat and a pointy black hat.
When asked nicely, she teaches many witch commands.
She also teaches the winking squint method.
Mama Diksha runs a shelter that sells a variety of useful witch items.