Comment by kikoyo on Secret Lady - Chapter 10

I'm not the smartest but I'll try to explain it in the way I understood this, let me know if I got it right- Basically Count Almot send a letter in secret to warn 2nd Prince about the plan with the poison, but Rozentin was confused if the conspirators did everything in secret, why is that maid the exception, how did she alarm the Count? Unless that was also planned by them. So he said that Prince needs to replace his cup with Crown Prince's cup since that one isn't poisoned, and because Crown Prince isn't attending anyway. But there lies the question, what if the both cups are poisoned? And when Rozentin asked about the Ivory Mura and he said it would go to the Crown Prince, it also sounds like a conspiracy that was planned, cause if the 2nd Prince dies, Crown Prince would get the Ivory Mura and the cure that is inside, simple. The only thing I don't get it why do they want to frame Count , who is on Crown Prince side?