Come sta andando ?

Please dimmi se photos 5 its a boy?

looks like you need more power from that light -- increase power or get it closer... or a combination of the two. the resulting length between growth nodes is your guide. so, it amounts to trial and error.. take notes of distance, dimming power % and hours of use per day of the light. when you find a combination that works well, it'll only require very minor adjustments for different plants in future. also, consider doing a 20/4 or 18/6 light cycle instead of 24/0. unless your light is severely underpowered and you neeed those extra 4-6 hours per day, it is more optimal to give it some period of darkness each day. with 100 watts i doubt this is the case. that should be able to cover 3-4 sq ft with ease, depending on efficacy.

E come faccio devo togliere?

That’s definitely a male part not a bract pal

I think it’s bad. There’s a distinct male pollen sac there, you’ve got an intersex plant there. You could just pluck it off and hope for the best but they might keep showing up.

I'm not mad about the way that bract is sticking out on pic 2. Cut it off. Pic 4, I see stigma "White hair coming from the side" so that's okay. I'd just remove the bract on pic2. Although it might be fine. I just don't like the way its sticking out like its on a little stem. Yet there's only 1. Won't do any harm removing. She is small. Did you uppot her late. Stress of any kind. You're gonna have a small girl. With no nodes but bud will be made up of a top cola and 2 bud sites further down the stem.