Awesome links, Joe.

I suggest, however, that if your friend goes to another clinic with a sliding scale payment like the one in Davis (link above), that she just leaves her Mom out of the story and says she's unemployed and has no income.

Meanwhile, I found these free clinic run by UC Davis medical school:
Shifa Clinic
419 V Street, Suite A
Sacramento, CA
916-441-6008
(Mostly Muslim oriented, but they serve anyone. Open Sundays 9:30am to 1:30pm)

Imani Clinic
3415 Martin Luther King Jr. Blvd.
Sacramento, CA
916-875-2995
(Saturdays 9am - 12noon. mostly African-American, but they serve anyone)