Really don’t think this girl is getting enough light and think she’s a little stunted in foliage height she’s ok standing about 40cm but the off branches look very weak but in whole for a completely free grow she’s doing as expected for the conditions
I think a mix of the 12-12 light cycle and small pot may have stunted her a little, but like you say she's doing great for the free grow as you'll still get a harvest. best of luck and happy growing. ✌️🌱