Never heard it called 'wagging' before. Must be an Australian term.
In all seriousness, I like how these two pages touch on Danni's insecurities. From what I remember of Danni's mum (may a thousand demons- or whatever passes for those on LaRaGa- incite her bowels to rise in mutiny), she is unlikely to have given her much help in developing strength either in spellcasting or anything else. And now to be not only subjected to Loki's jabs, but also put on the spot in a classroom...