Marek did not think he was being unreasonable. Melinda was a nineteen year old girl, and he'd accepted that was old enough to be out killing people, to be holding a dangerous job with a Mark on her arm, so long as he was in it with her. She was not old enough to be out in a bar letting blokes grope her and try to take her home, though, because he couldn't (didn't want to) be a part of that, and make sure that she wasn't getting hurt.
Maybe, for her twentieth birthday, he'd accept that she was old enough to handle this. Maybe. That didn't mean he wanted to see it happen even then, though.
"Don't look at me like that," he said, frowning at her. "I didn't even stab either of them. I could have, you know."