The vampire and werewolf are together so that they can help the girl. Armand can't help but also feel concerned with Arabelle the moment he met her. It seems that she has this charm that will make you want to help her with anything she needs. At least he's not the only one who is concerned about that new witch. It seems like she didn't know much about witchcraft either. Good thing he met her cause if not, her mom's curse might just bounce back.
Spells are only good for hexes according to his mother. When she was still alive, she taught him so many spells. Although it seems that potions is his specialty so he focused more on it. His mother is a powerful witch but one of the curses she casted killed her. That's why he didn't want to curse anyone. He's afraid he will have the same ending as his mother. The enchanted forest shields him from black magic. It's good that he found that place.
