This comment will definitely take some flack here, but in my own experience, even growing long-flowering sativas (which are more prone to herm anyway), once your plant's biology and hormone cycles have converted to flowering-mode, even a day or two of light schedule screw ups don't affect them much....it usually takes 4-7 days for a plant to think "WTF is going on with the lights here"...usually 8 weeks into flower it's too late for the plant to revert too far back into veg so they just keep budding. If you got it back on the right schedule and it's still budding, you're fine. When you have a timer mishap, the usual advice is to give your ladies a 24-48 hour dark period then restart the 12/12 cycle, just to make sure they didn't go back to veg.