If i were her, i'd just sit down and enjoy the dinner..
If i knew that a psychopath had kidnapped me, the best thing to do was just sit down and act as if i enjoyed being with him. That way i wouldn't get him mad, and he wouldn't feel threatened that i would tell the cops and so he would release me.
In this situations, although i hope they never happen in real life, it's better to just go along with it.