So Alexis comes in contact with this man at the gas station. Somehow her car ends up at the movie theater, parked haphazardly (as I've read/seen). How did the "suspect" drive two cars at once...which leads me to believe he stalked/followed her to somewhere more remote. How about this hair extension place? If it was in a strip mall with a busy parking lot, the suspect could've nabbed her there in the lot and left her parked car there for a while without arousing suspicion...but you would think that her supposed location would be where LE would first look and they would find the car. That leads me to believe that maybe she made another stop first? Perhaps to someone's house? Or to a Starbucks...as on her Twitter she frequently references Starbucks. Maybe she wanted to grab a drink before her appointment, and got taken there somehow.
Most people with strong family ties don't just up and leave without explanation. I don't think she chose to leave.