Spock suddenly having an adoptive/foster human sister actually follows very well on the tradition established in TOS itself of previously unknown, off-the-wall stuff about Spock suddenly being revealed out of absolutely nowhere.
Oh how nice... every seven years he loses all semblance of emotional control and he must mate or die. Never expected that, did we?
His father is the Vulcan ambassador, and nobody ever knew! It's funny that his personnel file said absolutely nothing about it, and not even his commanding officer or physician knew.
Uh oh, now he's exposed to intense light that would leave any humanoid permanently blind. What ever shall we do? Actually not a problem at all, thanks to those trusty Vulcan inner eyelids!
Kor
Oh how nice... every seven years he loses all semblance of emotional control and he must mate or die. Never expected that, did we?
His father is the Vulcan ambassador, and nobody ever knew! It's funny that his personnel file said absolutely nothing about it, and not even his commanding officer or physician knew.
Uh oh, now he's exposed to intense light that would leave any humanoid permanently blind. What ever shall we do? Actually not a problem at all, thanks to those trusty Vulcan inner eyelids!
Kor