Sorry. We all have to deal with the elements.Don't despair.

If the stems and some smaller leaves are intact they may recover. Water and feed them more regularly. They will have new growth from the base of damaged leaves.
I am in zone 8, GA, and stubornly started mine directly in the garden. It felt like eternity to see them germinate. Now they are about 18" tall and starting to flower. I had early on to deal with the insects (similar to flies). Even now they are still around and I have to spray them again with neem oil isecticide.

You'll never know, maybe the worst is over and you may have a great rest of the season.
Good luck!

I know how you feel same here..my eggplants are always a flop everyyear..!!
This year the seeds are not even germinating...I do direct soil!!

Okay, now at beginning August, things are looking up:

The 4 eggplants seem to have recovered nicely, sprouting big new leaves within a couple of weeks after the hail.

Currently, they all have flowers or little eggplants going. We'll see how far they get this year.

That is great, Carl
As I said in my first comments, I was hopefull that your eggplants will recover. So, being in NH, and having that hail, you are doing fine. Here in GA, my japanes eggplants have fruits just about ready to be picked shortly. From flower to fruits it should take about 2-3 weeks. So for sure, you will rip the reward of you hard work, persistance and not giving up the hope.

Thanks Cyrus !

i am praying for a nice long, warm fall for all you NE gardeners!

Take some photos when you can Carl!