I think she bitches because she knows she will have a good audience in Adele and Alex...it usually ends up in lots of laughter between them. I still think it is all down to her low intelligence, she just doesn't have what it requires 'up top' to realize exactly what she is doing or the implications of it. I also think Adele positvely encourages Jade to say more and more whilst being very careful not to implicate herself..very sly!!