I love that you are feeding her organically and she's looking awesome, pretty healthy girl!
good job, looks like a nice healthy plant. The fact she is quite short is not a bad thing because she is becoming really bushy. If you really want her taller than i would advise raising the light 6" or so, however i would not recommend it. She will naturally start to grow taller when she starts to flower so don't worry. Good luck, keep up the good work