Question

why was nightingale subdued and sleep deprived

Answer 1

because the selfish frog torchered her

Answer 2

because when Nightingale came to the Bingle bog she needs to frog as a master and she to compared him with the Mozart this was my biggest mistake that she considered frog as his teacher and so she used to respect every order of the frog and he was one who felt a lot of jealous from Nightingale because she was gaining name and fame in frogs area so frog said her that she should rectus day and night by singing loudly and when Nightingale used to do this instead of gaining perfection which she already had she was making the things worse for her as a result of which she was unable to sleep during the nights and was also went to depression and due to which she died at the end