Ouch!! I know the feeling very well. 🙁
Thankfully, if your camera can still read the files, all is not lost. If I had access to the disc, I’m reasonably sure I could recover your files within an hour (or two). However… since I don’t have access to the disk, it might be a little tricky to do that.
Is anyone in your immediate vicinity a tech-geek who wants to take on the challenge? 🙂 I’d be happy to give some tips and assistance if need be. Recuva might be an option, but I have no idea if it will be powerful enough for the job. I’ve successfully used TestDisk various times to recover files, so that is what I would probably try: https://www.cgsecurity.org/wiki/TestDisk
Warning: it’s not easy to use. 🙂
If you don’t know of anyone who can do it, I’ll be happy to help you out, either by remote, or even if you want to mail the card to me to look at. Feel free to send me an email if you need personalized assistance.
Best wishes on your photo recovery!