Oh yeh she really loves you?

You should have asked her why she wasn't talking, rather than getting your friend too, she's your girlfriend not his. Ask her straight what her problem is and if it's that you don't communicate a lot then say you've been trying but she's been immature and ignored you. Tell her you want to have a serious chat, she can't ignore you forever. Hopefully after you talked you can work things out, if not oh well...move on.