(there is a huge age difference between my sister and I) this is her last year believing in santa if she doesn't…

(there is a huge age difference between my sister and I) this is her last year believing in santa if she doesn't already, which I believe she doesn't but she's doing it to hold on to her childhood especially for my parents. She will be 12 next week and she already confessed she knows mom and dad move the elf on the shelf and she doesn't believe in that anymore but for me not to tell mom and dad. my heart is broken. i know she is way too old to believe anymore and this moment should have happend one or two years ago (but my parents baby her). Where did time go, where is my baby sister ? How am I supposed to hold a secret like that when I'm about to be a mommy myself 😢😢