Extreme heat stress

Definitely heat stress. It's a shame you couldn't react in time, but sometimes it is what it is. Still, I wish you lots of luck and patience if you want to save them. It will take quite a bit of time, and I don't know if it would be worth it.

So sad to see this pictures😟 It does not look like you can safe her and even if you do you would waste your time mate.

I just lost 4 plants to heat stress. It was so bad it stunned them and they could not come back. All you can do is try to let her recover.

If it truly was heat stress/light burn, no there's nothing that can be done except to have patience while the plant grows new leaves... and while you're waiting for that to happen, start a diary so that when other issues/concerns/questions come up, we'll have as much information as possible to help you with... Good luck... it WILL continue to grow....