Unfortunately given that the hospital was treating both her and her unborn baby and they had an overnight stay it does not seem too high

If you have a relationship with the young woman please tell her to contact the hospital billing department. Most hospitals (especially in CA) have a policy of reducing the bill so that they have some hope of collecting at least some of the money.

BTW, if she is pregnant/uninsured & below a certain income level, she may qualify for Medicaid or some government program developed specifically for pregnant women. I am sure if she contacted Planned Parenthood or some other organization that deals with pregnancy they would be able to direct her to the right place.