Those methods do not work with cats.

Take her to the vet right away. Inapropriate urination is often a
symptom of a health problem.

Well there's your problem in a nutshell. Doing that just tells the cat
that you obviously approve of her doing it there since you're reminding
her that place smells of her! And cats don't really understand the NO
word!

It's an outdated bit of advice that doesn't work with cats

First of all give her more than one box- some cats are fussy enough to
pee in one and sh*t in the other. Make sure they are cleaned regularly
and the litter is deep enough (My Sarrasine was a holy terror for
pooping outside the box until one day when I accidentally tipped what I
thought was too much litter in her box- problem solved!)

Lesley

Slave of the Fabulous Furballs

Hi Gary

Take your cat to the vet A.S.A.P. to get her checked out for a possible
urinary tract infection or other problem.  If she checks out all clear, then
ask the vet what could possibly be causing this behaviour.

Just as a suggestion... have you  or any recent visitors to your home been
sitting on your couch or recliner, and maybe have left traces of bodily
fluids (e.g. urine) there?  It sounds like your cat may be "marking her
territory". This is very normal feline behaviour.  It could be some kind of
"nervous" insecure behaviour......  what you have written in your post,
there seem to be a few control issues happening here!....

A calm environment, with a clean litter tray, with things to amuse and
distract her when you are gone for the day, some loving attention when you
are home.... these may all help (providing she does not have a health
problem).

I'm sure there is a solution to this problem..... just remember that giving
a pet loving care and attention sometimes has absolutely miraculous results!

She is still only a very young cat,  and obviously quite intelligent, as she
recognises that you do not approve of her wetting your couch or chair, but
unfortunately when animals are driven by instinctive behaviour like this
they find themselves in a very awkward situation, which you can only really
solve by finding out the cause.

I know it is easy to become angry or very irritated by these kind of pet
behaviours, but most of our pets are very dependent upon us, for everything
in their lives, and only really want to love us and please us.  So when they
find themselves unintentionally doing things which make us angry or
irritable it sometimes sets up a kind of vicious circle, as our displeasure
or irritation only makes the animal more anxious.... ergo more "anxiety"
behaviour.

Anyway... let us know what the results are with your visit to the vet... we
may all learn something from your post.  And after all that is what this
newsgroup is all about!

~Roberta~