Since you don't have a diary, it is impossible to know exactly what is going on, but I would suggest giving her some "grow" nutrients that contain more nitrogen. This will give her a bit of a pick up, but as Roberts said, it won't improve the leaves that have gone yellow already, but it will slow down further yellowing. It is hard to give exact advice as I do not know what you are feeding this plant, but my suggestion would be to give her 2 doses of feeding with the "grow" nutrients that you have, but do not give the "flower" nutrients at the same 2 feedings. After the 2 doses of "grow" nutrients, return to feeding her with just the "flower" nutrients again. Try not to stress her by removing any leaves until they look like they are about to fall off anyway. This pick-me-up with the "grow" nutrients should see her spark up a bit and get her through flowering without completely exhausting her. Hope this helps,..... Organoman.