I have Jerseys, love Jerseys, of course I am going to look at an ad about a Jersey. Or Shetland or Manx sheep, amongst many others, etc etc. I've no intention of buying, It's just interest.
Marketing is all about reaching an audience, so you should be pleased you are getting so many views! And sometimes one of those idle views may turn into a sale, or, more often, the reader knows someone and passes the info on...
Sorry to hear you are having to let your girl go - fingers crossed you find a nice loving home for her. It may help to mention whether you've been hand-milking her, show a pic of her and her calf, etc.