The person in question also looks like she’s in her early 20’s. She had a chronic condition where she was basically in a waking coma but wasn’t “experiencing” stuff for a decade so it’s as if time had jumped from her POV because she has no memories of that period.
This gap is so disorienting for her that she identifies her age as 22. Being told her actual birth year causes confusion and distress, as it clashes with her sense of time and personal experience.


I’m in my 50s and regularly hang out with people in their 20s because that’s my kids age and he invites us over for house parties. LOL.
Some times they really like stories about ye’ olden times… Like the time I went to Shelbyville to get a new heel for m’ shoe. I had an onion tied to my belt, such was the style at the time…
Oh my god, you hang out with people your kids’ ages ‽ They’re as old as your children
/s
What can I say? He and his wife throw great parties… He’ll be 30 this year though so we’ll see where that goes!