My last crash on my bike, the right handlebar hit me hard in the side and completely knocked the wind out of me.
My side hurt bad but I thought probably bruised ribs. Even if broken, there is not much they can do. So I opted for no hospital, no ambulance.
I rode home - about 80 miles - with an escort. Just wanted to get to bed but decided to get checked out, 'Just in case...'
So I drove myself to the hospital. Waited a bit and kept feeling worse and worse. After about 90 minutes, they did a CAT scan and found that I had lacerated my liver. Internal Bleeding. I spent 5 days in ICU. Fortunately, I was pretty compliant after they explained my options. Thus, I avoided surgery and healed well.
I hope you get yourself checked out and also heal well. Very well.
Oh! and since she was clearly in the wrong, I suggest you talk to an attorney. But you have probably already thought to do that.