just a crossover, you dont need to have read either books/series too understand it, but i definetly (sp?) reccomend for you too read them when you have time
When Evelyn Sader remade the School for Good into the School for Girls, she left her brother's paintings. R&R! Rated K for death and stuff.
Meet Beatrix and Mona. They are the daughters of the Wicked Witch of the West and Lady Glinda the Good. Will the two women remember their daughters? Or will something bigger get in the way of their "reunion"? Rated T because I'm paranoid and just to be safe.
I see Sader as a sort of father figure to Agatha. Sorry the story is so short, but I didn't want to take it farther, or else it would have been dragging. R&R!