My Mother was a doll collector...but not very much of her knowledge rubbed off on me. One thing that I do remember is that the "Pet Name" series was somewhat uncommon in regard to vintage china head dolls such as yours. Other names were; "Dorothy", Mabel", "Rose", among others. Most of the value attached to china dolls is based on the hair style.
A good reference for pricing is: Jan Foulke's Blue Book of Doll Values.