i am so glad that Tigger seems to be improving( she must be to go for a wander! ).
Demelza has a particular cry when she is about to be sick, so i get a little bit of time to get clean-up kit ready, and she is very clean in that she goes straight out to the Kitchen which has a lino type floor( easy to clean) only had to put her out there once,and she has gone out there every time since.
the great thing with cats is they use their intelligence to suit THEM not you, like a dog,

here's a local saying that might amuse you
" dogs look up to man, cats look down at man and pigs look him straight in the eye"

best wishes for Tigger's speedy recovery
andy