imessage won't send or receive on my mac
There’s currently a bug with iMessage in iOS 7 that is preventing iMessages from being sent/received. If your wife is on iOS 7, she can try turning iMessage off, resetting her network settings under General ⇒ Resets, then turning iMessage back on. This has worked for some users. iOS 7.0.3 is expected to address this bug next week.