They were probably shocked because she 'dresses' him up like a baby, he had a sleep style sack on and a dummy in. They likely thought he was much younger, especially as she said he didnt make a sound.
Although she seemed really proud and boastful of the fact he didn't say a word or make a noise. She's either sick in the head or thick, or more likely both.
He obviously is feeling so unwell he doesn't want to make a noise, it's nothing to be proud of.
I've noticed she always has to have SOMETHING from the medical professionals to make herself feel better. Tiny baby, smallest theyve ever operated on, best speech of any toddler, best behaved, most polite, potty trained SO early etc
She latches on to it, needs the validation.