i don't know on that one. i would say she'll die tho. i wouldn't have put any rooting hormone on tho. i'm no expert at soil so i'm just going on feelings. hell i'm no expert at hydro either hehe.
definitely check your ph. for soil you need to check the soil itself, the solution you give it and the run off.
for starters i would just flush with ph'd water.
sorry missed that q. i would resign yourself to a no. try leaving the stem uncovered and see what happens tho and hardly water it. i'd be interested to know.
lol. don't worry i don't think you are.
yes thats a pic of my female blue cheese at 21 days flower so will look a tad different to yours but they start showing a hair if its female.
no worries bro. it's easy to misinterpret stuff online.
that is bad mate. i've had stem rot in hydro and the plant will die. i would get yourself some cuttings quick.
edit: quick thought and i dont know what others would think but if you left the plant like that the stem may dry out and...
you need as much light as possible. for vegging its not such a big deal but make sure they are daylight spectrum (aka blue or 6500k). for flowering you will need 2500k bulbs (although some say a mixture of 6500k and 2500k). and plenty of them.
vegging is when the lights are on for a min of 18hrs.
how many bulbs?
check the faq. https://www.rollitup.org/view.php?pg=faq. it will help you alot. it certainly helped me and still does.