this is final. >> i think that she knew at some level that this day would come. >> reporter: attorney kathleen zelner acted like a mentor to knox and encouraged her to go law school. >> she wasn't free. now she's finally free, and that's a great thing. >> thank you. >> reporter: when asked what she would say to the victim's family knox said, "meredith was my friend. she deserved so much in this life. i'm the lucky one." >> axelrod: we have new details to report about andreas lubitz the troubled copilot of germanwings flight 9525 who investigators say deliberately crashed into french alps tuesday killing 150 people. allen pizzey is in lubitz's home down of montabaur, germany. >> reporter: figuring out why copilot andreas lubitz acted as he did is proving complex. german media today quoted unnamed sources as saying lubitz was suffering from an eye problem that could have affected