J.M.
I don't know about this method per say, but I did use an old fashioned Betsy Wetsy doll in my unsuccessful bootcamp like efforts to train my first daughter. I don't think it cost more than maybe $10. However, just having become diaper free after 4 kids I wanted to mention to you the DVD/ book 'Once Upon a Potty' (there are separate ones for boys and girls). You can rent it for free at the library, or I'm sure get it cheap on-line somewhere. My last 2 kids trained earlier than the first two after watching this video... not sure what it is about that thing. My last child, a boy - who I was told would be way more difficult and later to train than my 3 girls watched this dvd ONCE... at 28 months old... and decided he wanted to go on the potty. Sure he went, but there is a BIG difference between a kid who will go on the potty while you cheer and celebrate them and potty TRAINED kid IMO. Well, wouldn't you know it, within days he completely took over the process and became diaper free - at home, out in public, in the car, nap time, during play, etc.... Amazing. I literally did nothing but put that darn dvd in this time and then encouraged him on with a mini-marshmallow every time he went for the first couple of weeks. Keep in mind too, no matter what method you use - that a child will train easiest when they are ready. You'll know exactly what I mean when you start AND finish the process. You can beg, plead, bargain, reward, trick, scheme, reason, and jump up and down for every pee until you are about ready to be committed - but most children will happily train and have minimal accidents when THEY are ready and you won't even have to break a sweat to do it....unfortunately for many parents, that is not always the same time schedule they intended. Take it from a mom who birthed and brought to underpants 4 kids in 9 years - your daughter will train from whatever instruction you give her coupled and trumped by her OWN desire to do so. Good Luck! : )