You're lucky that you can get her out as quick as bail is set, the next day. In California, DWI offenders are held for a minimum of 48 hours...then bail is set, and it usually takes their families another 3-4 days to make bail...so they're in for a week, easily. If she is still living with your parents, there's no reason they shouldn't know, especially if they're going to be receiving mail in their mailbox from the court system.
And, since you and your friends are making her bail, you all now have a vested financial interest in making sure she goes to her court dates.
Really it should, don't feel too bad, she has every means to be responsible and now you are going out of your way to bail her out.
it's more than i would have done.
Chris, the sitting will do her some good, hopefully, but hope that your words never come back to haunt you. It's not a fun place to wake up--it made my mom go into the St. Joseph's Hospital detox program the day she was released from the drunk tank in 1978...and they stopped her 2 blocks (1 minute) from home.