fuck man.
thats super harsh. I dont trust fans except the giant one keeping my house 75 degrees.
the heat from my bulbs just warms enough to get in that sweet range.
humidity is not a problem.
that looks like it might be dead for good.
try watering just after you flip the lights off (or the timer does) with a spray bottle and then just let it dry the fuck out till the topsoil is crusty crusty, and THEN water again.
hopefully, she'll perk up after that.
best of luck.
I did nearly the same thing. BUT WITH THE FUCKING SUN and my girls are stronger now.
I cant fucking imagine why, but They are. here is a photo.
dont they look good?
not tall, but green as fuck!
I did lose some fan leaves. leave them on until they fall off, if you happen to experience the same thing.
they transfer energy back into the plant even though its hanging there, dead looking, it should fall off on its own. KEEP THE FAN ON lol
good luck