Set 'em up, barkeep.
Possibilities
.1. Abducted by person known to her; alive
.2. Abducted by person known to her; deceased
.3. Abducted by person unknown to her; alive
.4. Abducted by person unknown to her; deceased
.5. Murdered by person known to her; jog a red herring
.6. Hit by car; driver hid body
.7. Suicide
.8. Amnesia
.9. Hoax
10. Wilfully missing
11. Witness protection
12. Human traffickers
13. Space beings
14. Crafty clowns
15. None of the above; explain below
Select one or more, mix or match, solve this possible crime!