Girlfriend was raped

My new girlfriend was raped on 7th January, her male friend was afraid of going home because it was late already and she allowed him to sleepover (SHE TAKES SLEEPING PILLS EVERY NIGHT). While she was resting, he raped her and she was semi unconscious at that time and unable to fight back hence it continued until he finished.

Me as her boyfriend, I’m willing to bring her to the police station and also pay for her lawyer fees but I need opinions from you more mature monyets, what can we do at this point?

It has been almost a year so will the police find this man or just leave this case unsolved.

(There are Message and screenshots proof of him saying “I apologize for fucking you while you were asleep and I will not do it again”)

A LOT OF SCREENSHOTS OF HIM APOLOGIZING AND ADMITTING HE DID IT