I am very sorry for your loses and I hope your female is improving. I am sure you have added a little salt as well to help her heal but what I have read about ammonia poisoning, it is very difficult to overcome. We are all hoping for the best and good luck. It sounds like the ray is in very good hands.
Its gone be very difficult to save the female but Im doing everything I can. Im force feeding her everyday, but its very stressful for her. Shes thin and I dont understand how she can be alive!!!!