Hi Hollo,
NO, they are two different people! Elizaeth is American. Pinky is a Aussie from Melbourne
Pinky has written a book called "sleeping like a baby"
Both have similar "gentle" styles, however,
I have both Pinky's and Elizabeth's books and found them both very worth reading. Can't say I have had much success with DS sleep habits as yet but I do feel less guilt about what I am doing to cope eg co-sleeping etc. Pinky, in particular, is all for doing wht works for you and your baby and not listening to the "should and should not" critics you encounter every day!
Hope that helps!