Oh, boy. Unfortunately, there is not much that can be done unless you want to get a vet involved. She will either pass them, or she won't. If she starts showing signs of distress I would put her down because she will likely die a prolonged death from GI puncture/infection.
Unfortunately, these things happen. I've had my birds eat some pretty dangerous things over the years. I processed a bird that had a big old chunk of glass in its crop before. The chunk looked almost like sea glass by the time the bird was processed. The bird hadn't shown any signs of anything being amiss and I have no idea when the glass had been eaten. Screws are more dangerous, though, because of their shape. If they were short then there is a better chance that she will be able to pass it.
Sorry for your situation.
