Good question Wendy!

Based on my experience, "Sign Names" is a part of the Deaf Community...My husband and I and our daughter was given a "sign name" by our deaf students. What she did was use the first letter of the name and make a sign. My name "Amy" is letter "A" and taps her dimple, because I have a dimple.
My daughter Nia is N and makes the sign for "beautiful" because she said that Nia is beautiful.
Now you may want to give your daughter a sign name by using her initial look at your daughter's most "attracting" part of the face, that is the easiest way to make a "sign name".

Or if you know a deaf in your community and ask him or her to give you and your daughter "sign names."

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