Does supervit have a NPK on it? One site says its 6-2-4, which is what Im basing the rest of my post off of.
I would lay off on the super vit for awhile. It and the bloom nutes is giving you 10N, and that is probably more than your sativa needs. Id give her a week straight of water, and see if she starts to get any better. I dont know if the leaves will ever uncurl though. Just keep an eye on growth that isn't already curling and see if it stays normal.
You know what. Fuck Hesi nutes. I pulled up a PDF of all their products and only the PK booster had a NPK even listed. The rest of the shit doesn't even list one. How the hell are you supposed to know what your giving your plants?
Id still give em water for a week or 10 days and see how if they get any better or no worse.