Thanks for knowing brooHermaphroditism is commonly attributed to stress, but I believe certain landrace (definition varies widely) strains simply develop that way. Grow a bunch and see what you get. If they all herm, then you have a herm strain. Herm weed can be very potent, but has little bag appeal. Good for self use.
Otherwise, she looks pretty and lanky the way a Sativa should. Good luck.