My names Ruby Winchester and I'm a witch, among other things. Like Hermionie said, we meet up and try to figure out how our magic can work with each others. I tend to be strongest hexing and things like that, the darker side of magic. We all have different skills.
In terms of the stuff with Loki, its still pretty much all over. Belle mentioned a spell she'd heard of that would shield Lawrence but her boyfriend isn't around anymore and he was the big magic'y type that could have worked it. I figure we'd need to know more about it and she doesn't have that information