I agree with Nyboy emphatically; typically, males are the problem re bladder stones that plug up the urethra but females also can have this issue. The crystals make it painful for the cat to urinate and they often go wherever they are. Also, cats have great sense of smell and even though YOU don't smell it doesn't mean they don't. I'd cordon off your bedroom and break any habit before one gets started. And lastly, the smell will be more noticeable to both you and your cat(s) during humid periods. Even though I figured I lifted all the carpet and oil-painted the subfloor, replaced said carpets, when spring came around, somehow somewhere the urine smell came back. So, it's definitely a problem you want to nip in the bud as soon as possible. If your cat has medical issues, besides her health, the problem might persist if left unattended as well as become a behavior you don't want repeated.
Michael