i'm still a noob, but i don't see any pistils, i see stipules ("outgrowths borne on either side of the base of a leafstalk (the petiole). A pair of stipules is considered part of the anatomy of the leaf of a typical flowering plant, although in many species the stipules are inconspicuous or entirely absent (and the leaf is then termed exstipulate)"). correct me if i'm wrong somebody? plants can start to show pre flowers before you actually change the light to 12/12.

as far as turning them hermie, from what i understand it has to due with light stress. so if you turn them off during the 12 hours of light, or on during the 12 of dark. something like that.

as far as a plants growth during flower, which is strain dependent, but your ladies can grow anywhere from 1/2 to 2/3 in size. you can read some about it here.

hope this helps.

-shake