I’m sorry she’s not doing well.
I’m curious why you would make your animals adhere to your religious beliefs? I have a lot of friends & family who have strong religious values. None of my Jewish friends have ever made their pets observe Passover. None of my Catholic friends have ever made their pets give up something for Lent. None of my Mormon friends have ever made their pets fast at the beginning of the month. Even I, as a strict vegetarian, do not make my carnivorous animals eat a vegetarian diet.
Don’t take this the wrong way, I’m genuinely curious, because I’ve never known anyone to do this before. By your own words, it makes you and your animals unhappy, so why force them into a lifestyle that they did not choose & that is unhealthy for them?
I too think that her vent needs a good warm soak & I hope you can save her.