Thanks fourdez! I did get a reply from her, finally, saying that she doesn't give out client info (which is perfectly understandable) but then she thanked me for my interest so I'm assuming she got a bit offended by my inquiry.
After reading your reply, I'd be more willing to deal with her (I don't know if you'd mind emailing me your vet's name & phone # so I could follow up), but I'm torn between strictly going with a breeder listed on the YTCA or Greater NY Yorkie Club referral lists or someone like Eileen (who probably doesn't want anything to do with me at this point anyways

) ... oh well.