They are pretty close, you don't want all the pistils brown anyhow, once they are all brown the plant is on the verge of death and with reduced THC levels.
Personally I recommend to harvest at somewhere between 95 and 98% brown pistils, this will put you in the 10-30% amber trichome zone and the buds will have peak THC levels at that stage of maturity too.
If you want to "hurry her along" a bit, you could go to 12/12 and she will stop sending out new pistils and go into a final maturation phase. This will not affect final potency or growth as all growth should basically be over by now, it will just get her to stop reflowering and finish once and for all.
Hope this helps, Organoman.