So the flying away and biting is normal. She views that area as her "bed" or nest and has chosen that as her place to sleep at night so when you are removing her she's telling you no because that's where she wants to sleep. Personally, I wouldn't let her go there anymore, like if it starts to get dark put her back in her cage because it's bedtime.
As for the sneezing, it can be related to molting, especially if she's only doing it at night. The open mouth this was probably her adjusting her crop, they do that quite often. The clicking is not normal, but if she was sick she would be doing it all the time. You can call the vet and mention the clicking and ask what they think. Did you do any probiotics after the antibiotics?
As for the sneezing, it can be related to molting, especially if she's only doing it at night. The open mouth this was probably her adjusting her crop, they do that quite often. The clicking is not normal, but if she was sick she would be doing it all the time. You can call the vet and mention the clicking and ask what they think. Did you do any probiotics after the antibiotics?