Fear-induced labor I am writing a fiction book and was wondering if fear can induce labor in a woman who is almost ready to give birth anyway?

Many things can. Bring on labor, have not heard that fear can cause labor because many women are scared of labor and that does not cause them to go into labor.
Extreme . Extreme stress can cause labor, even preterm labor. It would have to be pretty bad fear, but i think it sounds plausible for a book.