That looks more like the root zone got hit too hard than straight fan damage. The fan might curl an edge if it is blasting one spot, but the dark green clawing after the feed points more toward too much available nitrogen/salts, and the little spots can show up when the roots get shocked or the pH swings around from feeding and flushing.
Since you already flushed it some, I would stop there. Don't keep washing the pot over and over or you'll just leave the roots wet and low on oxygen. Let the pot dry back until it feels light, then give plain pH'd water next time. In soil I'd be aiming around the mid 6s.
Grow Big is the bottle that can bite fast. Big Bloom is pretty mild, but Grow Big at full chart strength on a small plant can make them claw overnight. When the new growth starts coming in normal again, bring feed back at maybe 1/4 strength, not both bottles full blast.
The damaged spots won't heal, so judge the recovery by the newest leaves. If the new growth comes in clean and the leaves stop curling down, she is fine. Just keep the fan moving air around the plant instead of hammering it, and make sure the leaf tops aren't getting hot under the lights.
