I've been told that molasses and nutes are an okay... but, you'll taste the molasses if you water with it right before harvest so, My suggestion would be give her a heaping dose, maybe 1-2 tablespoons per half gallon, and cut it when you are a week from harvest and flush.

we started feeding our widow molasses and didn't flush, you could definately tell it was sweet the bud. I would have opted for the natural flavor of the weed, but not disappointed overall. it definately did help though, next time try using it as soon as you switch to flower.