At an impasse

I sent a birthday card to the address I had and it was not returned; I sent a Christmas card to the same address that got returned. I know the email address I have is good as it lines up with her Facebook and Twitter accounts... But have never gotten a response from any message or photo sent to that email address. This really sucks, you'd think that she would want to at least have some basic contact with her oldest child instead of blowing him off.