Date Went So Well Whitney Invited Cody To Her Apt. Why Would She Ghost?

Cody is calling to see if he can get in touch with Whitney, a girl he met on Hinge and went on one date with. He thought she was hot and fun. He felt like there was chemistry just through their message. He asked her out for drinks and it was a blast. She was everything she appeared when they met in person. They had such a good time and he was pleasantly surprised when she invited him back to her place afterwards. All good stuff. So why the heck is she ghosting?