Thank you for your condolences, I truly appreciate it. I still plan on publishing it after my editor shreds it and pieces it back together. At the moment however, I am still debating as to whether I would like to include an intelligent dinosaur species. However, if I were to do so, it would be in a later installment.
As for the whole reptilian breasts from Madam Vastra, Yea, mammalian breasts are a strange and improbable occurrence. Breasts are merely adapted sweat glands to produce highly nutritious secretions. In order for a reptile to to form sweat glands, a few things must occur. The first thing that is required of the species is to evolve into an endothermic animal and to develop a highly active life style. Such a change should allow for a sweat gland like organ to develop. Next, the species will have to slowly evolve to secret these nutrients to their offspring till natural selection dictates that breasts are the most efficient delivery system and attractive display for mates. So yes, it is a highly improbable set of events that are required for the species to undergo. But, it has happened before... At least for mammals. so its not impossible. Though, I doubt that they would retain their scales for the hindrance they would profile for the glands. So if a "Reptilian" species developed humanoid breasts, then in they would appear similar to us. More than likely develop downy feathers in the place for hair(Alligators and other reptiles have been shown to develop proto-feathers within eggs on a few occasions as well as discovered genes that convert scales to feathers), have smooth skin, and appear very similar to us.
...P.S. I am highly curious as to what a real life crocodile or alligator would look like with feathers.