Cystitis and excessive belly licking

Regulars here know Meep has cystitis. I've been noting a thinning of
hair on her belly, about where her bladder is. It isn't self-mutilation
- yet - it's just short hairs, but no skin damage. I pointed this out
to the vet and she indicated that this could indeed be caused by
discomfort from cystitis, but did not recommend any treatment at this
time. The treatment she'd suggest is anti-inflammatories, and I guess
that's to be avoided for as long as possible, due to the stress this
therapy places on kidneys and liver.

I'm bothered by this though - it's a visible indication that she's
uncomfortable, even if she's not showing clinical signs. She's licked
to the point of self-mutilation before, so I'm keeping a close eye on this.

She's been eating almost only wet food for a couple of weeks, but it
hasn't made a difference to this behavior. Is it too soon?

Is there anything I could give her to either make her more comfortable,
or at least to keep her from licking?

Please don't suggest a second opinion - would if I could. This is the
best of the two vet clinics in town. The next nearest is a plane flight
away.

jmc