I'm pretty sure this wasn't an "otome game" or "villainess" story when it started. What a shame to see that change in 1 chapter. Besides wasn't the reason for Camilla's "death" due to her biological brother. Pretty sure he used her in his attempt to kill their step-brother which lead to their execution... but now we have a different "reason". Now there's a "Heroine" and a "Villainess" apparently. Kidnapping the heroine and trying to kill her is the NEW reason why FMC dies now. What.
Feels like the author forgot their own story. How disappointing.
I agree, the idea that this world would have a protagonist came out of nowhere, but the reason for her death isn't inconsistent, since it changed every time she had the dream (or at least, many times over the course of mamy dreams).
Remember, she hasn't died in only one way, she's died in a countless number of ways in her dreams for 20 years, that's why she knows the "story" so well