Well, for one thing, you haven't been feeding her with any NPK nutes at all... Activera has an NPK of 0-0-0 ... it's only function is to promote good soil health but the plant needs to have something to eat... For this grow, since you're so close to harvest, it is what it is but in future grows, you're going to have to use the other products in their line-up - BioGrow and FishMix in veg and Bio Bloom in flower... I personally would stay away from their TopMax, especially in flower, as I've seen it cause too many problems for too many growers... but these three are their basics and your ladies need to be given nutrients all the way to harvest!
Good luck!