
Spoiler
When they find her body (which was in a coma) and she goes back into it (she switches back and forth with the bird for a bit until the end, where the bird ends up dying bc they couldn't save her in time so that they both could live, the bird gets a statue).
I'm not sure when exactly when she reveals that she was the bird, but I think its soon after she wakes up. I think theu said that it takes a bit, but after she reveals info to the ML/Captain that only she would have known if she was the bird (plus the bird's weird behaviour), I think is when he believes her.
Another bigger spoiler for the end...
The 4th prince is a dick and I think he tries to blame stuff on the MC, but gets called out for some stuff that he has done and killed.
Her 2nd oldest sister (the red head with blue eyes) is a bitch and sold them out to the other kingdom and was working with them, but she tries to blame stuff on the MC, but she uses her bird self like she did with her brother to get evidence and found out that the 2nd sister framed the 4th prince and had all of her other siblings killed that went with her when they escaped and sent for them to kill all of her other siblings as well. In the end the truth comes out and I think she's killed as well.
The MC is the only remaining member of the royal family and takes her spot on the throne, leading the country to peace. I believe that she marries the ML/Captain and I think she has kids? Maybe 3? Its been about a week since I've read the spoilers.
Spoiler Link: https://forum.novelupdates.com/threads/cavier-falcon-princess-%EC%A0%84%EB%A0%B9%EC%83%88-%EC%99%95%EB%85%80%EB%8B%98.123096/
Can somebody tell me WHEN TF IS SHE GOING TO REVEAL THAT SHE'S A FRICKING PRINCESS?? LIKE IM GETTING IMPATIENT IM DORRYT