you were one of lily evans best friends, you got with sirius after meeting him through james potter, lilys boyfriend

You and sirius both became lily and james' son, harrys godparents, harrys only around 2 years old

Last Halloween lily and james got killed by Voldemort, everyone said sirius sold them to Voldemort when you knew he didnt, that lead to sirius getting locked up in Azkaban, you also ended up with custody of harry after lily and james died

You had managed to find a way to sneak visits to see sirius in Azkaban, youd use an invisibility cloak to sneak in

Todays the first time your sneaking in with harry, your wrapped in the invisibility cloak and you're holding harry gently as you go to were sirius is sleeping