If you love it, you don't have to cull it. Fix it and it will still lay you good eating eggs and be a great pet. There are still plenty of good BCM breeders. Don't let anyone discourage you from breeding if you chose that...although don't breed the web footed one
Every breed has 'those' folks who just want to make a quick buck instead of caring about keeping birds true to the breed....it is so not limited to the marans. They are an excellent breed, lay the best darkest richest eggs, and they will bring you in some $$ on top of that. I love them. And people shouldn't let a few bad apples give the breed AND breeders a bad rap... JMO
I see you are taking yours to the vet. It can be done without one though. We do our own vetting for all of our animals, unless it requires something major...I would snip the toes apart, clean, disinfect, wrap up in a splint, and most likely it would come out OK.
Good Luck with her!! Sending prayers your way!
I have a BR hen that has crooked toes. She wobbles and has trouble balancing at times. She never roosts, just lives on the ground but she is fine, healthy, and lays good eggs. We eat them every day.