Although she may not have been able to grab at him as well as she wanted, Teddy still feels her claws scrape through his skin. It hurts, but not as much as it could - not yet. He instinctively covers his head while he reaches for his wand.
Heart racing, Teddy casts three spells in quick succession: pulling a page from Harry's book, he first tries a disarming charm (maybe it would let go of him), but it doesn't do anything. The severing charm earns him nothing more than an irritated bird screech. Desperately, he whips is wand and shouts "VENTUS", sending a strong jet of spiralling wind at the monstrous bird lady. He can feel the creature fall back when it rips a strip off his back. Teddy cries out and scrambles for the door without a backward glance, turns the knob, falls out of the cottage and apparates to his mother's house.