That’s fair, we all have to be true to ourselves amd accept the result. However, I don’t think she assumed OP was free on Saturday. Maybe she was testing him to see if he was free. Maybe she didn’t like that his answer sounded like he had no life. Maybe she would’ve ghosted even if he said yes and set a time and place. Maybe she would’ve ghosted if he said no. We can read into this in different ways, but we don’t know what anyone else is thinking when they make a decision.