You're arguing with Peter David's thoughts on the Dr Selar's child which surprised her because she forgot to take into account that her boy was a hybrid with alien attributes which sped up early development considerably... Seriously? Selar? Did they even try to offer her "that" part when they were casting Voyager? Either as the Doctor, or the Doctor/Captain... Imagine Voyager's Captain's relationship with the EMH if the CO had formerly been a CMO? Failing that, the EMH could have been patterned after Selar, or theCMO might not of died and the Hologram could have been staffed to another position on the ship.
That woman was Gorgeous, and is still nothing to sneeze at on How I met your Mother.
Where was I?
Childhood takes as long as it takes.
Environment is a huge issue.
But when you get down to it, did Saavik frakk a thirteen year old Spock?