My friend got hit in the head by here sister. It happened earlier today. See is telling me the pain is getting worse and worse. The side if her head is getting more swollen by the hour. What do i do I'm with her right now. I can only do so much I'm a teen and don't know what to do. Is it supposed to

Continue to swell. I dont have a car so i cant take her to the hospital. What do i do now. Btw her sister punched her in the head earlier. The swelling is happening on the front of her head but on the side. Again what can i do