Got in a car accident, now other party claiming injuries.?

Earlier today i was leaving school and driving home on a busy street. There was an object (a box full of stuff) in the middle of the road in my lane and i could not see it seeing as there where 2 or 3 cars in front of me, they start slowing down and eventually come to a complete stop to try and switch lanes and get out of the way, in the mean time i was behind them unknowing that they planned on stopping completely, they had stopped abruptly and i didn't have enough time to stop completely and i hit the rear bumper of the car in front of me (making it my fault). She immediately starts freaking out and i go to pull over to the side of the road (we were on the middle lane) and shes frantic and yelling at me , while i simply told her to pull over (so we wouldnt be in the middle of a busy street) and after i told her about 5 or 6 times to pull over she finally listened to me. At this time i got out of the car and inspected the damage my car (a 1999 jeep) was no different what so ever her rear bumper was sagging about 2 inches on the left side and had a dent. Police came wrote a simple report and told us to call our insurance providers when we got home, which i did. About half an hour after i talked to my insurance provider i get a call from my claim representative to get my statement and she then tells me the young lady in the other car was claiming she got injured. This is getting me really mad because it was a tiny low speed accident, our cars hardly moved, and shes just trying to get money from me. Im an 18 year old college student who's had to work for practically everything i own, including my car, and i can possibly afford any extremely expensive medical bills. I only have $25,000 for injury liability and my insurance provider (Geico) said they will cover something like 20% of the medical bills leaving me to wonder if im expected to pay the rest. I am stressing out a lot over this , is there any thing i can do ??