Friend going to get sued? car accident?

How much trouble? Car accident? longish? Last night my friend and I *she was driving* were involved in a car accident. She was driving back from her friends house down by the beach (unfamiliar area to us since she lives about two hours away) around 2:30 am. As she was driving down this road, within speed limit when we saw a cop car light up behind us, they ended up pulling the car behind us over not us but I guess because my friend was so nervous we missed a stop sign coming over this crossroad. She ended up getting swiped on her back right tire by a car coming across. Scary ****. Anyway we ended up spinning out and she was freaking out crying. Her right tire rim is shot and there is a pretty nice dent but no other damage. Likewise the other drivers car suffered a crushed headlight on the right side and a dent and scratches localized to that area. We called the cops and the other driver and passenger seemed unharmed but the driver was pretty pissed understandably. When the cops got there he started screaming that we were speeding going like 60 (we were only going 35) and that he was disabled and in pain. They ended up taking him to the hospital in a stretcher. My friend talked to the cops but was pretty hysterical the whole time. She told them that she missed the sign and all that. But now I am really worried what is going to happen to her and this whole situation. I know she is at fault for missing the stop sign and she is really cut up about it. She has no idea what to do, or whats going to happen to her. The cops said they are sending her tickets in the mail but I am really worried that the other driver is gonna sue her for all shes worth, which is basically nothing, she is only 19 and has about 50 dollars in the bank atm. So I wanted to maybe get some insight on this situation, from someone who knows what is likely ahead or been in this situation before. 1. What are the chances this guy sues? And how much could he walk away with if the insurance company refuses to settle (for damage to car or his medical bills if he does end up being hurt) 2. What are the chances that her insurance (GEICO) doesnt cover any or all or how much they will cover? Any suggestions or advice is appreciated. Thank you.