Found our cat in a bad way yesterday could barely walk and falling all over the place. Vet gave her a thorough exam ruled out any broken bones but is unsure what's causing the issue. Could be trauma could be neurological. Gave her a good dose of painkillers and she has improved greatly over the last 24 hours. We're going back to the vet later so she can decide whether or not it needs further investigation. However in the mean time cat is being kept in but have bought a litter tray which she keeps getting in and out of but not actually doing anything. Do you think she's struggling to pee and poop or is she not getting what the tray is for (she's old and never had one). She is eating and drinking well so am surprised she hasn't been at all.