It ended perfectly. With just enough doubt about whether or not she knows to leave you wondering. More stuff nowadays needs to leave you with questions, they spend too much time and effort trying to explain everything away these days.
I would have to say in my opinion: She did know but either trusted him enough to keep her safe, or she didn't want to know what happened. After the trauma of something like what she went through a bit earlier, she most likely is still recovering from it.
