Desperate advice please, my friend was forced to sleep with a guy. What do i say to her?

Your friend got d. You need to encourage her to report "Lee" to the police, tell her parents, and go get checked for pregnancy and STDs. Otherwise, unless you have been d yourself, there's not much you can say. Just be there for her if she needs to talk, and back her up on whatever she does in relation to this situation. Encourage her to TELL. Otherwise, "Lee" gets away with it, and could do the same thing to another girl.