1. She's lost her passport and is in deportation
2. She was abducted during layover
3. She was rerouted to Australia and is still in the air
4. Her pickup never came, she's still at the airport
5. She's rendered mute by the smog in Beijing
6. She's been abducted by aliens.
7. She's forgotten our number.
8. She's been hit by pedicab.
9. She lost her phone.
10. She's dead.
11. SHE WAS WAITING UNTIL SUNDAY TO CALL FOR FATHER'S DAY, TO CONSERVE ON PHONE MINUTES.