The conventional darkening of the sky at that time and his inability to really get the full pictorial view of his mother which stood less than five feet in front of him, enlightened Derek that the time was around 7:30pm already; since the moon wasn't really out.
He was hungry, but he found it a wrong time to broach the topic. There were more important matters lying around; like for example, the drama that will ensue at the pack house in some minutes time if his uncle was still around. He already knew that his cousin would throw a fit if she met her father at the moment, since her anger was still undiluted, still hot like a can of concentrated acid and could burn anything or anyone that gets in its way.
But for that, he couldn't blame her; he actually pitied her, even though she had reported to her father that his mate was a human.
He also understood her anger, and knew that he would throw a fit, and more, if his father ever betrayed and used him like that.