Eheh, it's a kind of family anecdote, you know. XD
My mom's name is Aleksandra, but when she was a baby her older,1-year-old, cousin Sophie, thought she was a doll (a strange kind of doll, cause moving, eheh) and she called my mom "Aja! Aja!" what in her childlish language meant "a doll"(There is no word "aja" in Polish language). So my mom, from her babyhood, is called Aja. I think it sounds nice.