I’d FIM her.
See the spot I circled? There should be signs of new leaves growing right there at the top. I’d spread those leaves I circled open and pinch off 60-70% of the new leaves inside her.
Others may have a different approach - that’s only what I would do, and not necessarily “the right way.”
As far as sex, no, it’s way too early to tell. I’d guess it’s a lady because it’s so short and squat, and the growth of the branches are more X shaped than Y shaped but that’s far from scientific. It also does not address possible hermaphroditism so don’t relax when you see pistils showing.
Next up, once you let her recover from the FIM or top, whichever you decide to do, I’d start a gentle LST to spread the two new main stalks apart.
You can see smack dab in the middle of my plant there’s the spot where I FIM’d her and she split off into 2 new branches.
Man, it’s embarrassing that my ugliest plant is the one I have the good demo photos for
PS- sorry, I’m all out of likes!