My Tinkerbell only weighed probably about 8oz when I got her and she was 8 weeks old and she was just fine she was just an adorable tiny baby also the smallest of her litter. Im sure your breeder is a great one dont worry, she might be small but Im sure she is a healthy one! My Tinkerbell is 2 years old now and weighs 2 lbs five ounces she is great I love her sooo much, and Kody! I wish you the best! Amanda