Keza blinked her eyes, unsure of what to say to him.
True. She could fly him to New Themiscyra and bring him back. It would take just a few hours. All she needed to say was, "Sure! I'll take you tomorrow."
However, what if he refused to come back with her? He could enter the castle and refuse to come outside.
What will she tell Hippolyta then? Not just Hippolyta. The others also had desires they needed fulfilled. She knew how they were dying of anticipation right now.
They would never forgive her if she threw their luck in the wind just like that.
The obvious answer was no.
It wasn't the best though. Because Byron wasn't a tool. He was a human and she knew once they refused him the right to freedom, he would get angry.
Nobody likes to be treated like a slave, after all.
Sure. You could argue that it was kinda of a win-win situation, but they needed him more than he needed them.