If she is willing to sign a release from any and all liability in exchange for you paying her doctor and medication bills, then you should definitely do that as it will insulate you from any further legal liability down the road. Otherwise, paying her bills now cannot be used against you as an admission of guilt so you can pay her bills now without fear of ramifications, it can be considered a good-will gesture.
Attorney
8+years of experience in all matters of civil litigation and Hearing Officer/Arbitrator