The actress and radio host has shared multiple throwback photos from her time as Sally Fletcher on the series, but amongst the memories is a photo of the 39-year-old with her daughter Mae, 3.
"I thought the love of my life was Home and Away.. Then I met this perfect being," Ritchie began.
"It’s been a long road but I am so proud and so happy that I gave myself the chance to realise my greatest life achievements didn’t all have to be thanks to Sally Fletcher," she continued.
"Thank you for having me @homeandaway and Sally #ifyourereadingthis I miss you every day.. 😢".
Other photos marking Home and Away's momentous included one from Ritchie's first day on-set in 1987, and a grown-up Sally Fletcher with Scott Irwin, played by the late Heath Ledger.
This article previously appeared on WHO.