well, if the plant is currently in flower....... simply turn the lights on for about an hour or so during her dark period. that will most likely do the trick....
Have you considered cloning as opposed to trying to make seeds? If so what hinderance are you facing in propagating by the cloning method? Its about as easy as falling off of a log. Much easier than bringing them up from seeds.
i havnt begun my grow yet. Just planing out it. I am not opposed to cloning at all. I am asking because i want to mix some of the strains i have. So in the flower period all i have to do is give it some light during its dark hours?