Kristen Scott was the younger sister of Montgomery Scott.
Like Scotty, she is dark haired. As children, she is the only person who refers to Scotty as "Scotty" (a nickname he doesn't really like as a nine-year-old, but will grow to use his entire adult life). (TOS short story: "Bum Radish: Five Spins on a Turquoise Reindeer")
- Kristen is presumably the mother of Peter Preston, though other works may contradict this.