Kimberly,
To clarify the social security picture, there is two different parts of social security. The first is disability paid under SSDI, Social Security Disability Insurance. Under this you have to be totally disabled for one year and payment begins with the sixth month. Fatigue from chemo/radiation or the disease itself is enough to qualify. The date is picked by either you or the doctors. I have seen some start with diagnosis and others with the first treatment. In my case, I started when I was first in the hospital to pull some teeth, put in a PEG and mediport. I worked up to the day before so that seemed logical. The benefit amount is determined as if you retired right now, based on what you have paid in through social security taxes. In addition, the spouse usually qualifies for something if there is a 16 year old or younger child in the house and the minor children will qualify for something as well.
SSI, supplemental security income, is a little more difficult to qualify for and is soley based on lower income levels while disabled intended to pay basic food and living costs. I do not think you can own a house or have a certain level of assets but I am not sure.
In addition to these Federal programs, there are state programs that help with medical, etc. They are even more restrictive on money in the bank, home ownership, etc.
There should be a social worker at the cancer center/hospital your friend is at that could help. Under HIPA, they can not discuss anything about the patient or family but that does not mean you can't call and ask them for help for her. They could speak with her and do a quick check list of things she may need but she would have to tell them.
Your friend is so forunate to have you and even that is helping her more than you will ever know. Comfort and love are as important as anything during this horrible disease. Believe it or not, even you are affected, as is the entire circle of family and friends.
Ed