yes!!!! Lawyer up and "shut up".

Find a lawyer NOW!!!!!. Tell exactly what happened to you and your car, I believe your lawyer will request an medical evaluation from an appointed medical center.

Don't worry about the expense for hiring an lawyer. He/She won't charge you until the law suit is over, most likely, some percentage of your claimed compensation will go into his pocket but it's totally worth.

From now on, You must refuse to disclose any information regarding to the accident to anyone calling from her (the other driver's) insurance company or her lawyer or even any third party unless your lawyer allow you to do so and tell them contact your lawyer directly.

Good luck