When will my sister be charged or receive citations?

Sister driving while alcohol intoxicated. She was involved in a hit and run accident, but left the seen. Police were called, received a vehicle description and searched and located her driving erratic at high speed. She passed several other cars crossing over the center lane in a No-cross Zone, narrowly missing other drivers, then she crossed over the center lane, with 2 police chasing, light and sirens on, hitting a vehicle head on. The other driver was treated and released at hospital, my sister was treated for minor injures, was admitted for observation and discharged after a day and a half. My sister thinks she just blacked out and rolled her car. She stated she has no idea where her car is, or if its even drivable. This information I received from the local paper, no names have been released.