Do you mean 2 or 3 weeks 12/12? In the pic you posted she just barely decided she's going to be a she, now she will start flowering. Buds will come later (in roughly 3-5 weeks). She will continue to veg for a while first, creating branches for your future buds. Don't worry, it may seem at first you're just growing those white pistols, but the calyxes they grow out of will get bigger and bigger. Most of the weight and volume will add in the weeks after that.
Good luck!