Vanessa branch was a 28 year old human actress playing Naomi in Shattered.
Adult Naomi in Shattered was from 2394.
Naomi was born in 2372, so Naomi the character was 22 in shattered played by a 28 year old actress... Oh gods, this requires a differential equation to work out, rate of fucking change...
But yes the evidence would seem to lay credence to your wild guess.
If she only grew at double time till she was 5 or 6 years old, that would explain why they cast Vanessa in the role.