I am assuming that she is already flowering and will be done in less than 4 weeks. That means that it is to late to spray with pesticides. Have you tried NEAM oil or 'tomato dust' ?

"The best thing about this stuff is it has a witholding period of only 3 days,
and doesn't leave any sort of taste providing you don't apply it 2 weeks prior to harvest, at this point all your plant should be getting is straight water anyway. This flushes out any nutes that have built up in the plant system"


good luck
and don't worry about the yellow leaves.. just look at her from far away...

heheheh : )