I dont know what to say,,,I wish someone else would have an answer.
Could you try some chick vitamins and minerals and electrolytes? That might help. And some Stoneybrook farm yoghurt. Maybe a scrambled egg for her.
If she is only 2 weeks I would just wait and see how she is in a couple more weeks, they know how to trim their beaks as long as they have something to wipe it on that is hard and will grind it down. Watch them and when they get done eating they wipe their beak back and forth on the ground and...
the search button could be used for BEAK. There was a case back a while ago where the person, I think, built some kind of beak on their chicken. I dont know if I spelled that right might have a c in it.
Is it deformed or has the top beak grown too much? Cement blocks or bricks in their pen are good for them to sharpen her beak on. I clip my banties with a finger nail clipper when the are in cages, but only a little.