Your presence has been noticed by the cloaked figure. It turns to you as you try to conjure a patronus. For a moment it hesitates, but after your second try; it moves towards you. Leaving the other teenage girl behind, its new interest, suddenly filled with hope and happiness seem much tastier than the distraught girl on the ground.

It doesn't seem faced by the white light emitting from your wand. The creature moves in closer to you, its presence sending shivers down your spine and causing your patronus to falter and go out.

Perhaps a stronger memory is needed, and quick, before you end up on the ground in despair just like the other girl in the small clearing.