If she is suicidal, you should stop worrying about how to get meds for her and call the suicide hotline yourself and explain. How are you going to feel if you find out she killed herself because she didn't seek help for fear of losing her kid? You're lucky that she feels you are a close enough friend to turn to, to let you know how she is feeling, so help her and her son by calling the right people and explaining what it going on. Medical professionals can assess the situation and decide what help they can give her. If she puts herself into the medical hands for treatment, she can probably dictate who takes care of her son while she's getting treatment.

The child doesn't need to be taken care of by a suicidal person. Sorry. That's the important thing. People who are not thinking clearly can make a bad choice in very little time.

She can look for low-cost clinics, go to the ER, call her doctor and explain and see if she can get an appointment. She cannot simply restart the drugs if the doctor cancelled them because she no-showed to appointments though. She would have to be seen by a doctor that can say what prescriptions she needs. Unfortunately, there is no legitimate source for drugs other than going through a medical doctor, whether it's the ER doctor, a clinic doctor, or the state hospital doctors. She can alse try looking for a womens clinic, like the places that counsel pregnant girls about abortions or adoptions and such, and see if they can help her out with a low cost place to see her.

Good luck, and I hope she gets some help quickly.