I Found My Fiancee's Leather Book

What's this? I found my Fiancee's Leather Book under her pillow. I visited her because she's ill and my father says to. I didn't expect to turned out unto this. "What is this Sophia?" I gently spoke to her. "It seems hard to open, can you open it for me?" The maid said that, she'll forget the events during her illness. "T-that.." She slowly put her hand on the leather book and it glowed. Did she put magic? "O-opened.." Her face is flustered dye to her high fever. I'm so sorry, I really need to read it. I gulped as I opened the Book .