CLV, going back to her maiden name is really insensitive at this point in time and almost cruel. IMO she is trying to prove to you she is moving on and maybe even trying to hurt you. Do not give her that pleasure. Do not say a word about it to her unless there are some legal/D implications. Act "as if" you do not want her having your good name anyway.
I think I am almost pissed for you. Man, she is in her own little selfish world right now. You deserve better!!!
