JKR Chat Hermione Animagus

[johnbowman19]

No: HPFGUIDX 92520

Did anyone notice in the JKR chat that when she was asked this 
question?

Class 14: If you were a animagus which animal would you be? and why? 
JKR replied that:

JK Rowling replies -> I gave Hermione my idea animagus, because it's 
my favorite animal. You'll find the answer in the Room of 
Requirement, Order of the Phoenix! 

JKR is referring to Hermione's patronus form. Or is she? Could she 
have let slip that Hermione is also an Animagus? The question was 
asked about Animagi not Patroni (presuming these are their plural 
forms). Could JKR mess up like that on purpose? 

John who really would have liked to know how far along box six is.