Even with trisomy 13 and 18 it seems like most of the ones who've survived more than a few years are mosaic.
Found
this FB page of a kid that's 3 and supposedly has complete trisomy 13
View attachment 1889073
Like Kayli's mom the mom seems to have a compulsion to emphasize that her kid has Full Trisomy and how those evil doctors were wrong every chance she gets. Ngl I do kinda wonder if some of these moms are being entirely honest, especially since munchie tendencies are pretty common with fundie moms.
At least the kid actually seems aware and isn't a horror show like Kayli.