Lois, You need to advise him of what has happened to his daughter. He is after all her father even though he is in crisis himself.
Unfortunately any evidence of the date rape is gone now unless there was tearing. Your daughter needs to go to the doctor just in case there is something more going on, i.e., contracting of STDs, etc. It's probably too late for the morning after pill...
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
