Can I sue for specific performance and can I do it in small claims court

Agreed to purchase a puppy from a breeder and gave a 200 cash deposit, for which I received a hand written receipt stating full purchase price, deposit received, for female puppy of specific breed, date to pick up puppy, money due on pickup and signed by breeder. Breeder now wants to sell the puppy to someone else, probably for more money, and initially refused to even return my deposit. Upon threat of legal action now says they will return my deposit, but I feel this does not make me whole and want this puppy. It is of superior quality and could be worth over 10k although the agreed to,purchase price was less than 2k. Can and will the courts find for specific action and make the breeder go through with the sale. On other thing, she contacted me several weeks after our deal and demanded full payment in cash 6 weeks before delivery and demanded a 25 hour response. I responded to her in turn by email which she says she never received and told her I would put the money in escrow.