Yepp i agree its a Girl, I possible give her more LIght/ stronger Light, she has big Space between the Nodes. If its a true 150W its enough for one Plant, Then you just have to get her a little closer to the Light (around 25-30 cm). If its not the true wattge( lightcompanies " lie" about the true wattage of their Products. ,) then you have to add another Light to reach true 100 watt, to grow successful