I agree with the other posters....like it or not she will probably go by a shortened version of her name like Em....I did like the one poster who said to drop the ''a" and add the "e"....but to be honest, my name is Kimberly, and I have never liked it and only go by Kim.....it always seemed to formal and snobby to use my full name and I never did (only my mom calls me Kim)...there may be a very good chance your daughter would prefer to use a short version????
As for the middle name I do like grace, and like rose. Emmalina Rose sounds very, old english...something in a romance novel...I like it.
As for the other poster with Jerzey. It is very different if that is what you are after, but it comes off like jersey cow or football jersey and sounds more masculine to me. But let noone stop you...you have to choose what you like...as for other names with 'Z' that is a tough one.....liza leeza, zoe, come to mind, and I suppose you could find a name with a "S" and make it "Z"
To everyone let's enjoy our little ones.