Critical Purple Feminised

So, she’s officially a monster, which is a problem because there are signs of light stress and I can’t raise the panel further up. Second problem is that she has nothing but a single pre-flower growing on the upper knots, so I’m afraid she’s no autoflower at all. I need to make a decision in the next few days: wait and see if she autoflowers, or flip it to 12/12 and risk ruining such a beautiful plant. PS: This plant has received no training at all, not a single leaf has been removed, it is growing freely and untamed.