Hi bud.
Yes, she has pre-flowers and should soon start to stretch.
Personally I only use scrog nets when the plant starts showing sings that it's branches are getting too heavy, which is usually a couple weeks before chopping.
As your plant is on the short side, I highly doubt you'll even need a scrog net. The branches are already shorter and more stable than taller plants.
If you see that some branches are growing exceptionally faster than others, then you may want to apply a scrog net in the manner DaddyPrime2 described as that would help keep your canopy at one level.