Sorry this happened to you. I had it happen to me too and many others here on the Dis. After 6 months of having the name AuntieJulie on vmk they made me change it. I was told it was because of the Auntie part as it revealed to much about me and that we aren't supposed to have any reference to family relationships in our names.
I wrote in letter after letter asking why then do i see others with relationship references in their titles. There is still a Community Leader with the name "dad" in his vmk title and a huge amount of people with personal names in their titles and so forth. I listed about 8 different examples of each. I only got the form letter back every time i wrote so i gave up and decided to just accept it and get used to my new name.
i asked a host about it in a host game and she gave me the answer that the system isn't perfect, which is true and this helped me go on and forget about it.