Some animals will recover from a stroke gradually. I hope you will be able to give her time and see how she does, especially since "She isn't in any pain, she eats/drinks, and she meows and loves to be pet."
There is a wonderful website to help with care of cats with kidney issues (chronic renal failure). CRF is common in senior cats, but a lot can be done to manage it and improve her quality of life. I do not know how well you can coordinate with your parents to do various things to care for her condition, but if they are willing, here is a place to start. It talks about a special diet that helps keep the phosphorus levels down, which may improve her ability to walk. It is hard to know how much of her walking issue is from the stroke and how much is related to the kidneys causing high phosphorus levels in the blood, so I would think it would be worth trying to control her phosphorus with diet and see if it helps her walking. Your vet probably has a prescription pet food you could try with her, specially formulated for older kidneys.http://www.felinecrf.org/phosphorus.htm ... tion_limbs
You may also want to talk to the vet about giving her fluids at home to keep her hydrated, if he thinks that would help. Here is another wonderful website about giving your cat fluids at home. I have done it and the important thing I learned is that it made my cat feel a lot better and she actually liked
getting her fluids, which is just the opposite of what you might expect.http://www.weirdstuffwemake.com/weird/s ... juice.html