Cut off anything you consider 50% dead. You should try to get more lights if all your using is 2. Get Y connectors for those sockets, it turns one socket into two. Then keep the bulb 3 inches away.

Wow that was really yellow, it was so green. I might put it outside for a few hours every day too, let the sun help heal that puppy. Spray water on those leafs, every few hours. That might help them recover. Sorry that had to happen
She is still recoverable, your were on your way to some dankness, this incident might extent your veg or flower a week or 10 days. That 5 gallon pot is a great size. Lots of people don't use big enough pots.