Answer:
Step-by-step explanation:
I think the best thing to do in this situation would be to see if they feel comfortable explaining the situation to you. If not, ask them if it's okay to hug them and if not heavily express your support for them. If it is something serious, go to the hospital and get a kit done. I would say report it to the police but often times they don't take it seriously. Make sure they know it was not their fault at all and that they didn't deserve it. Make sure you both are safe from any harm. Overall medical and emotional care are the most important in this situation. I hope this helps, don't hesitate to comment if you need more help. My heart is with your friend <3