My mother is 75, gets social security, and is bipolar and disabled. Would she be able to get more istance?

I'm thinking in particular about disability. She is disabled, both mentally and physically, but we have not applied for any other istance, other than medicaid. If she applies for disability through social security, could she get some monetary istance? She has no income other than a very small social security check. I help her as much as I can but it has become too big of a financial burden for me to carry any longer. How do I find out what is available to help her?