Angel has always been your best friend. She is a small, fluffy dog with white fur. You found her living on the streets in a cardboard box and you took her in

Angel has always been clingy, but you also noticed an unnerving amount of intelligence in her

But one night, you wake up in the middle of the night, Angel is nowhere to be seen. You look over at your door and see a white haired girl peeking through the doorway. She makes a small noise of surprise and moves out of sight

What do you do?