Then I just won't care :) She can call herself
Tilly if she likes. I doubt that this will happen because where I live
Tilly isn't really used and I think most of my friends and family would consider that nickname to be unintuitive.
I first heard of
Tilly on
Gordon Ramsey's daughter, before that I just never thought about it as a nickname option.
Matilda just never seemed like a name that would need a nickname to me. It rolls off the tongue and works so well on its own. I've met a few Matildas and they were always just
Matilda. The most intuitive nickname to me would be
Mattie.
Tilly seems to be somewhat fashionable in England but where I live it is pretty much unheard of and seems a bit odd along the lines of
Mamie or
Myrtie it just isn't very fashionable or attractive.
Of course that could change but I doubt it. It just doesn't work well in the language we speak here. I also sort of doubt that she would choose a nickname that is so close to her sister's name. But if it happens it's okay. I watched Little House on the Prairie growing up and only realized many years later that the names of two of the Ingalls sisters,
Mary and
Carrie, are actually way too close :P