Thank you for contacting JustAnswer.
I am sorry to hear about the problems you are experiencing with your friend. Bipolar disorder can be a very difficult condition. You may find the following link helpful in understanding this condition: http://www.nimh.nih.gov/health/publications/bipolar-disorder/complete-index.shtml
One of the best things you can do for your friend is to encourage her to continue in her therapy and take her medication. She may find this website helpful in offering ways to afford her medication: http://www.insure.com/articles/healthinsurance/free-drugs.html
You might also help her to evaluate if there are any things that she bought that she could return in order to get some of her money back. Enabling her, such as you describe her mother is doing, is not helpful for her. I hope this is helpful. Please let me know if I can clarify further.
Do you know of any web sites that you can recommend to locate a support group?
You can find Bipolar support groups at the following sites:
I hope this is helpful.