@Pocky8 My first instinct is to say she's some sort of super-vessel, so holy power is sucked in like it's nothing. The opposing dark/evil power might hurt her more, be deflected, or also be absorbed, depending on where this goes.
Yeah! Louisa acting like the most wizened and mature person in the room, like she should!
First berate the bratty child. Then hug the poor child. And now adopt the lonely child.
I guess it's technically a deus ex machina? I don't feel like it because it's pretty reasonable-hardly out of nowhere. What's important here is that justice has been served, primarily by Louisa. Not so strange Graham would be attached to her at all, even without fate.
...Also, I don't know why my mind went to this, only that it did.