You don't have a diary for this grow? It would help to know a whole bunch of things about it... like what's your PH, what are you feeding her and in what amount, what substrate is she in, is it an indoor or outdoor grow, i.e., lots of different things that would help us diagnose the problem and suggest a solution! I don't think it has anything to do with light stress.. I think it has everything to do with nutes... but I'd need to know more!