Glad to hear the Blazer is on the road again and no one was hurt. As for the girl. She will probably be charged with receiving stolen property, which in this case is a felony. Unless she admits she stole the vehicle, or their is a witness to the theft, she will not be charged with the theft. If she was found by the police in control of the vehicle, she will be charged with OVI. The court will probably order her to pay restitution, so keep your receipts. Most likely she will not pay you anything. Do not feel bad about not dropping the charges, she needs to answer for her lack of respect for you and the general public. If she does not wise up, someone may get seriously hurt or killed by her actions while impaired. A side note about leaving keys in cars. It is a parking violation, called unattended motor vehicle. Good luck.
Kenny V