I agree. If you are seeing true pistils, then it's likely that you have true girls. I don't have much experience with hermies(only ever had/seen one), but from all the reading I've done it sounds like interrupting the dark periods in bloom, is the most likely way to turn a plant hermie. Trust me, in the past I've stressed plants to the point that they became so mutated that they didn't even look like pot plants anymore,LOL and they never turned hermie, not once. It's tough to do in veg, so you shouldn't have much to worry about. Congrats.
![Cool :cool: :cool:](/styles/smilies/icon_cool.gif)