what is the air temp around the pot? is the soil going bone dry before you water? can you carfully lift her out her pot slightly so you can see what state her roots are in. sorry to ask so many questions, as you can proberbly tell already there are plenty of differtn reasons for the cause of a yellowing plant. its best to go over everything before you try and fix it as the wrong fix will only give you more problems. shes not gone to far, she can still bounce back.
---------- Post added 10-30-2011 at 09:49 AM ----------
can you take a photo of the roots? just down the side of the pot, you dont have to take it all the way out