In my area, Catholic Social Services helps recent immigrants, regardless of their religion, as they are a non-profit organization, not a religious one.
If you are in the country legally, there are many more options, if not, you may want to go to your original country's consulate, and seek help there.
It is likely much easier for you to find work than for your mother; but perhaps you are already working. If you are still in high school, remember that your education is primary. Seek help from your school counselors, and they may be able to set you up to receive credit from working your job.