Yeah.... she claims to have "experience" after visiting a colony, but obviously that hasn't taught her much. She talked as if the kids in the nudist colonies didn't have friends (there were obviously other kids there). Being the rest of the guy's family puts on clothes when needed, I'm sure they could do the same for guests. Some nudist families living in textile communities would either dress up when others come over, or they would have friends that understand.
The puberty issue is also far-fetched, as that is not the case for someone who grow up their entire life as a nudist, as we are more aware of our body and its processes, and have nothing to hide. This was a very ignorant assumption made on her end without any factual basis.