Step One: Open a new screen name on YWN that uses your real name.
Step Two: Start this thread again under the new screen name.
Step Three: Tell your friend how much you enjoy YWN, especially the coffee room.
… That’s about it. Or you could level with your friend and say you need some space for a while, that you have your own trials/problems going on right now and you can’t continue to be there for her in the same way that you have been.