Ok.  So Meep does have idiopathic cystitis, tons of struvite crystals
(and unfortunatly, almost too much blood to see them.  Another test in a
week).  This, despite daily glucosamine supplement, as much canned food
as she'll eat (not easy!), and a bottle-type waterer (not electric).

So.  Vet had me try Royal Canin veterinary urinary formulas - Meep won't
eat the wet (it's gravy based, and she insists on jelly) but will eat
the dry.

Buying cat food from the vet is always an expensive proposition.  I'm
wondering if I have any options.  Is this really a 'prescription' food,
and is there any way for me to buy it, or a similar competitor, for
cheaper (this is in the UK; unfortunately meat-based products can't be
shipped through APO.  Darn.)?

Also, I'm looking for recommendations on canned foods that she might
eat, that might help.  So far, the only thing she'll fairly consistently
eat is Felix bags (UK) and some types of US 9 Lives cans.

US canned foods, I only have a choice of 9 Lives and Fancy Feast.

Meep is one of those cats who seems to internalize stress, which is
probably why she has cystitis in the first place, would a Feliway
diffuser help, do you think?  Has anyone use Feliway to try to treat a
cystitis-prone cat, and had good results?

Any other suggestions on how to keep this cat hydrated and crystal-free
are very welcome.  Food supplements, alternate medicine, I'm open to
suggestions.  I'll research anything you suggest, so websites with more
info would also be helpful!

Thanks!  I need all the help I can get, to get Meep healthy and keep her
that way!

Jodi