As someone previously said on ss - what if she was made to make that cab call ? (Forceably)Wasn't her name recorded incorrectly? Maybe that was a cry for help ? Bunny and ou may be able to help?
Audio tapes have been listened to for any audio clues/ signs of duress etc. The call had her surname spelled with a more common spelling of "Spears" but she was not asked to spell her name. That was not unusual for telephones to not ask for spelling if it was straightforward sounding. Basically it was your standard peak time corner pick up taxi call. Nothing suss, nothing unusual.