Every time Setsuko Harmon holds her newborn granddaughter, it's like the pair are meeting for the first time all over again.
That's because 77-year-old Harmon was diagnosed with Alzheimer's disease eight years ago, and is reintroduced to her month-old granddaughter several times a day.
Harmon and her daughter, Christine Stone first made headlines, after Stone uploaded several videos to Youtube, where she constantly told her mother she was pregnant.
Stone said she originally recorded the videos for her family, but convinced her reluctant father to let her publish them online. To their surprise, the videos inspired hundreds of thousands of people from across the world.
"The original video I made so Sadie would be able to see how much her grandmother loved her and how excited she was for her to arrive," Stone said. "Originally, I filmed it just for us, because the likelihood of my mom still being around when my daughter is 18 is slim to none."
"I wanted to show people, yes, it’s a terrible disease, but you can still find moments of joy through it," she added.
In June, Stone said it will be a bittersweet moment when Harmon finally meets her daughter.
"I expect her not to remember her, but I know when my mom meets my daughter she’s going to get excited every single time," she previously told PEOPLE. "It's sad, but it’s not sad, because she will be just as excited to meet her over and over again."
Four months later, Stone gave birth to a healthy baby girl, Sadie.