If thats 36h and you didnt water, then I would bet on overwatering. I see no draining holes, so it could be drentched down there. Top soil still quite moist. What are your ambient temps and humidity? I would blast ambient heat up to around 28ºC and I bet you'll see her perk up
You sure its not just normal droop before lights out. Mine always do that after water too but perk back up after few hours.
If u can my friend get your pot up off the floor even if only an inch so air can get under. I set mine on metal grates.u have to keep round 77 degrees during lights on. 68 all time is to cold for roots.