Plants Sexing early

Ok here it is, is my plant gonna be useless...I have a female plany that was planted on new years eve, this is the middle of march and I am still on 24 hour light cycle....was gonna maintain it untill day 100 when I changed to a 12 hour cycle..Right now I am using only 100 w flourescent bulbs 2 of them and a 150 agrosun bulb...gonna use a 1000W system at day 100......Obviously I have doner nothing with the light cycle to promote a sex....Will this plant be worth anything when she buds? BTW this is in Soil.

100 days just for vegetative and your doing indoors, damn! Well your plant should bud just fine once you switch to flowering, based one what you told me. Just curios though, how big is your plant?