Stress UTI and food issues - help!

[MrsRonaldUlyssesSwanson]

I have a rescue cat who is around 6 years old. Got her from the Cats Protection who vaguely alluded to some stress she'd suffered when living with her previous family as there were other cats she didn't get along with. She actually can't cope with other cats in her vicinity and gets very stressed by some of the territory issues that are present in our back garden area and constantly gives herself stress UTIs. She has so far turned her nose up at all of the specialist food for urinary care and won't eat anything apart from a specialist dried cat food from the vets, and Dreamies.

The only medical option open to us has been painkiller / steroid injections, it's impossible to get medication into her at home because she won't have any wet food, she won't eat wet cat food and also turns her nose up at fish / chicken etc. The latest bout of territory issues has seen her be given the injection about a fortnight ago and as it's worn off she's gone back to straining constantly in corners of the garden, although not in the house which would suggest that she is actually able to pee (although I've got the crystals to get this double checked that there is no infection present, there wasn't a fortnight ago). She's drinking plenty of water via the glasses of water dotted about the house, the water fountain and the pot of rainwater in the garden.

I've got a telephone appointment with the vet tomorrow to talk about being referred to a behaviourist but I am also been looking into other brands of specialist urinary care (which I'm not sure they stock) and also thinking about trying wet food again, maybe fish poached in milk, chicken etc. It'll have to be done very slowly because the last thing I want to do is make food an issue because that'll stress her out too. I've seen subscription services like blink today that I thought might be worth a try - does anyone have any experience of these types of things, and would you recommend them?

Also, if you've had any success with reducing stress UTIs I'm all ears as to how you did it. We have multiple things in place, quiet areas she's adopted where she can sleep uninterrupted, feather wands which she loves and seem to reduce her stress, some catnip toys and I may have taught myself some cat reflexology which definitely helps

Mix two capsules of cystease in a tasty wet food with a bit of extra water.

Has she tried gourmet or Sheba?

She won't eat any of the brand's you can get at the supermarket and we've tried a few of the ones from the vet too. We had a nightmare when she first came home to us, all she would eat was Dreamies for the first fortnight while I went out everyday getting more food to try her on

Will she eat cat soups or those yoghurt-y tubes you can buy? Lik-e-licks I think their called.

My boy gets stress UTI's maybe once or twice a year. The vet told me to get The Royal canin urinary wet pouches, this is all well and good short term but long term it will cost you an arm and a leg. So i give him the Purina urinary dry food instead! I'm not sure how successful it is and has been yet but we shall see.