I'm always up for monsters haha. I was actually thinking of kicking her over to 12/12 soon. Those blackberry autos aren't growing worth a damn in comparison to the last ones I grew, So they'll have to deal with a little less light now.Switch to 12/12 or clone her. If the the clones veg under 24hrs light for a month they will switch to flower under normal vegetation time (18/6).
Unless you wanna grow a 5' monster.