She obviously lost a v-shaped notch from her mandible portion, but they sometimes do that and it just slowly grows out and is gone. Like any small, young parrot, she checks out everything with her beak and sometimes they get hold of a wire or a screw or something and it damages their beak a little. I make sure all the screws and such are tight in my cages every week. Emmie CAG put a groove in his bottom beak a few years back loosening a bolt that attached the walls of his cage together. I ended up putting a sleeve of wrapped rope over the re-tightened bolt until he forgot about it.