If she hates the renal prescription diet, then just feed her what she likes - its far more important that she eats
something than holding out in the hope she might it some of the renal diet which has questionable benefits - and in fact there is evidence that these diets are far too low in protein and in some cases can actually
cause muscle wastage due to lack of protein.
Cats have a high protein requirement, even those with CRF - most cats with CRF only need to reduce protein/phosphorus in advanced stages of CRF. Her blood tests will show if her phosphorus levels are high - if they arent, there is no need to reduce phos. If they are high, she can still eat whatever she likes, and you can add a phosphorus binder (Renalzin, Ipakitine are a couple of phos binders) which will reduce the overall phos load - ask your vet about phos binders.
Do look at the felinecrf site that a couple of peeps have posted, its one of the best sites around about CRF.
I would also recommend getting a copy of the blood test results from your vet and even ask them to go through them with you so you can get a better idea of how advanced the CRF is.
With regard to pilling - would she take the pills disguised with any of the following?: Webbox treats (Sainsurys have these, they are meaty sticks and I just push the pill in and squish the meat around), cheese (any!), wafer thin ham/chicken, cubes of meat (cooked or raw, beef, chicken etc). My Sam has to take Fortekor and he always eats his tabs in the Webbox treats - he just thinks he's getting a treat twice a day LOL!