According to her mother Beccy Serou, Catherine may have gotten into the stranger's car while waiting on an Uber.
"I realized she had sent me that note 40 minutes before I found it," she told the Daily Beast. "I tried to reach her but her phone was off. Later police tracked her phone in the woods near the town of Bor."
She said earlier in the day Catherine had visited a beauty salon and had returned home to her apartment, but had gotten a call saying her payment to the salon had not gone through.
"So she rushed back but Uber did not come forever, the salon was about to close, so she stopped a random car — I am just imagining what had happened," she said. "Catherine is extremely careful; and that stranger must have seen her on the corner of her house before."
"I think that when she saw that the person wasn't driving to the clinic, but instead was driving into a forest, she panicked."