My six year old cat was just diagnosed with colitis. As she became
sicker, she stopped using the litter pan and I'd find piles in random
places (she still pees in the pan thank goodness!).

My vet gave her a cortisone injection to make her more comfortable,
and we're going to discuss how to proceed later on this week. In the
meantime, her stool is now formed and healthy, but she didn't go back
to using the pan.

I have 2 pans which are always kept clean. Every now and then I put
her in the litter and dig with her paws hoping she'll get the idea,
but she hasn't caught on so far.

Any tips on how I can retrain her?