Generally the long flowering strains needs a nutrient schedule with more Nitrogen than the other strains so if you did feed her like s classic strain then she's in need of nitrogen earlier than expected. I also took a look at your plant on week 10 and the edges of the leaves + burning tips is a sign of a potassium deficiency at a early stage. I would not bet on a Nitrogen def due to the dark green colour of your plant but the potassium def seems to fit, a bit of PK boost and everything will be ok ( you'r on late flowering so you can start to feed more than the previous weeks )