Kalbario Eisimirdana journeyed to Washington, D. C. earlier this year to assist her daughter Rose Eisimirdana, 33, with her newborn baby. During her time there, she became enamoured with the popular children's presenter.
Now, she tunes into the educational children's programme daily, enthusiastically reciprocating Ms Rachel's upbeat greetings, clapping and singing along.
Rose, a nursing assistant based near Washington, D.C., shared: "My mom is glued to the show. She'll say 'Put on the lady who talks to me'.
"She'll excitedly shout 'She just said hello to me!' and then repeat after her. She doesn't understand it's a recording.
"It's become a daily routine. It lights her up."
Kalbario arrived in the US in January on a six-month visa and now spends her days caring for Rose's nine-month-old son.
Hailing from a small village in northern Kenya, Kalbario is part of a pastoralist community where televisions are scarce and life revolves around tending to livestock.
Before setting foot in the US, she had never encountered a TV, let alone watched a YouTube children's programme.
Rose revealed: "My mom never went to school and didn't know what a TV is until she arrived to the US.
"She doesn't speak English but she's completely drawn to Miss Rachel.
"She'll stand right in front of the TV, repeating words like 'peekaboo' and trying to copy all the actions.
"She sometimes tries to reach over to the TV trying to shake hands.
"She truly believes Miss Rachel lives in the TV and is interacting with her."
Kalbario, who only speaks in her native Rendille dialect, has managed to pick up few English words from the show like "hello" and "come here."
Rose stated: "Through Ms. Rachel, she's learned a couple of things and it's beautiful to watch."
Kalbario's unexpected friendship with Ms Rachel and sweet bond with her grandchildren has helped her settle into her temporary American life.
Rose commented: "She's strong, traditional and now unexpectedly a fan of YouTube kids' shows.
"It brings me joy that through Ms. Rachel she can now say a few words in English.
"It's amazing watching her become lively when Ms. Rachel comes on the TV."