Letter from Tan the House-elf To Severus Snape, Master of Potions at Hogwarts School:

Tan served Snape Family, just like Tan's mother and father before him. Tan loved his Family. Tan never broke any of the laws. Tan was good. Tan saw bad. Tan was scared. Tan serves Master Severus now and forever, now that Master Gade has been dead for so long. Master Gade was not nice. He is not master now. Tan kept a journal too, just like Mistress Kaia. Tan wants to tell Master Severus about Master Gade and Master Kaia. Tan is an old house elf, but Tan has a long memory. Tan wants you to know, Master Severus. Tan gives you his journal freely, Master Severus. Tan is sick, and has no children to serve you in his stead. Tan is sorry for failing you, Master Severus.