Warning This Section Does Contain Spoilers
This instruction sheet from Grace is written in the symbolic language called the Spirit Alphabet. This is the same language that Grace's hex book (spell book) is written in. The hex book is the ABC's of magic. The Spirit Language is not a different language, it is just a different alphabet. Using two different items from our box (our notebook and Grace's Letter) we can easily decode this instruction sheet.
This is a cleansing ritual using sage and she gives us complete instructions on how to cleanse a room.