Purple Lemonade Auto

Since the leaves are curling in and they are also droopy it is definitely watering and root problems. Ventilation could also be an issue if you have none, a small fan can go a long way in helping the soil dry out, while also keeping the air moving. Try letting it have a dry period, add some ventilation then water again once she has shown recovery. Good luck with your grow, since it's in early stages I believe it will live.