Hacking into my wife's facebook account....

Probably not legally.

Best recourse is for your wife to change her Facebook password and then update her status to tell her friends that she was hacked and she apologizes for anything that happened but it's been taken care of.

And, in the future, she should guard her password better and also be sure not to click on anything that looks suspicious.

Thank you. All sorted apart from not knowing the IP.. Cheers, DG