I couldn't find a birth registration in 1885 but I did find a death registration.
Perhaps she may have only lived a few days.
Oh, I dunno why I didn't notice that - nice catch. I wanted to make sure it wasn't a confusion with Margaret's daughter Edith Margaret Marion.
You wouldn't think that a father would name a new daughter the same name as one that passed away. (Especially with a new wife) The name must have meant something to him.
In order to keep the two from getting confused, you could add one called "Baby Edith" Just a thought.