What’s likely to happen when an employee waits two months to charge harassment?

Q. A female employee has made a hostile environment claim for the first time. She alleged that her male supervisor began sexually harassing her more than two months ago. She claims she didn’t complain sooner because she feared her supervisor would retaliate against her. Based on her excuse, will we still be able to defend against a lawsuit claim by asserting that she unreasonably failed to use the complaint procedure available to her to prevent and stop any alleged harassment?