You just made my heart stop.
I keep asking about the car.
People act as if it does not matter. It's not a cheap car. Even used. At best, she saved up to buy the car, or got a loan, or she got an advance at her new job, or her family simply didn't mention they helped. Or a generous person bought it for her. Or helped but it for her. Additionally, she told her mom over the phone she was taking her out for breakfast, lunch, and dinner for her birthday, which I believe had already passed. It feels like she suddenly came into money.

My ORIGINAL thought, which I wrote in detail in a Word document, was that the car is connected to these murders, and it's someone who either sold her the car or worked at an automotive shop where it was sold. Ether can also be found at automotive shops. Now, whether it is in a form that can be administered to knock one out, I do not know. But it's what is still used in third world countries as an anesthetic to knock people out.