Bella smiled, softer again as she approached the girl. "I'll teach you," she said sweetly, stroking the girl's cheek again. "I'll teach you everything I know. You'll learn to please us, but you must be prepared for the consequences when you don't," she said. "You do understand that I need to punish you if you do not apply yourself fully, don't you?" she asked.
"Training with me, isn't easy. It will not be the kind of sweet Expelliarmus your father thought you. I will hex you until you are strong enough to withstand the pain and can hex right back right through it. I will invade your mind until you are strong enough to push me out. It will hurt, it will make you exhausted, but in the end, you will be stronger than before. You'll be stronger than your father, than your brothers, than all of them."
"Then you can show them what you have learnt. Don't you want that?" she asked.