Your response was really mature and logical! (Exactly what my DH would have done! I also think he could be more 'mature' and 'logical' at times) I'm sure the cat is so much wiser now.
First - keep your fabrics out of harm's way (I've learned that the hard way!)
Second - if that was the first time your cat did that, then it might be smart to try to figure out WHY she did!
And urine DOES wash out. Think of all the fabric diapers that were used!