I like your story so far.If thier isn't any beyrayal of Harry then Ginny and Hermoine shouldn't be slaves.I think you should consider haveng Bellitrix Lestrange as a slave to teach Harry dark magic along with keepimg an eye on Voldemort's inner circle.He also needs veela magic so also consider Fluer as bonded mate.Whom ever you pick for bonded/slave keep in mind they have magical talents along with sexual attributes for your story.Thats all for now.