All things are three at Hogwarts

Chapter 286 Collection (modified, updated for Silver Alliance ksg and Huan Yu)

Ellen summons Maggie, the house elf.

Maggie appeared in front of Sirius wearing a neat and clean uniform. She was as beautiful as a little angel - at least compared to other house elves. She looked at Allen tenderly and bowed.

Sirius couldn't help but think...