I remember now that you posted a while back asking about this breeder and, at the time, all seemed well. I posted the link to the pdf file where this breeder was listed on TICA. Now TICA has changed the way they show the breeders (it's by breed) and they are no longer there. I don't know if this helps, but Karen is married to Grant Lemaster who is a doctor and practices in Mt. Sinai, NY. He is a psychiatrist. (I'd probably schedule an appt. with him and lay out all your problems with a certain breeder of your kitties. LOL). The information on the registration of the domain name is the same as what is on their website. You might also want to file a complaint with the Better Business Bureau for that area.
http://www.bbb.org/new-york-city. They may open your complaint -- that's not saying Karen will respond -- but you have to start somewhere. You have a breach of contract! The People's Court might be an interesting place as well -- file in small claims court.