Talk:Episodes, films, and shorts/@comment-26973802-20140614220909/@comment-26973802-20140616133644

You must be talking about what we heard her write in the episode. The full entries in the journal are in the Journal of the Two Sisters, as it includes the Friendship Journal. Twilight talks about her previous visits with Cadance and says "On her wedding day, she was trapped at the bottom of Canterlot and impersonated by the changeling queen". (and this book came from one of the writers of the show so it's canon)