i didnt know anyone who is in a similar situation. But i do remeber there is a movie and there is a girl in that movie who is in a very similar place. She is a senator and there is a bad man who's running a presidential campagne and once trying to do sth. bad to her(He has already done that to quite a lot of women around him and he is under investigation at that moment.) well, the police goto her and ask if he has done that to her and she says no (sure, unwillingly.) Cause she has a son who is the result of a rape to her and she doesnt want her son to know about his father and rape cause she is such a nice mother and she just tell him that his father is dead. So...after all she HAS a reason to lie, doesn't she?
Although its just something in a movie but i can say there isnt anything more realistic than that .
so you are not alone.
the reaction of each rape victims to their case varies so much from each other. you dont need to feel guilty since its still within the normal reactions.

keep your story to a very small group of people in whom you can trust ,okay?

take care