>>1020068 (OP)
get a configurable base mesh, customize to reference, or 3D scan her
then hire her to do facial expression acting and motion capture for gestures with a motion capture studio, create hair, clothing, and put that in the game
it's what Kojima does
that's why stephanie joostenis in MGS V and why Dakota fanning is in Walking Simulator 2
Also similar was done for Ellen Page in Beyond Two Souls
Step 1 = obtain money