Hi, I am so sorry for what you are going through.
At 65, you are old enough to collect "early" social security retirement if you choose and are insured for same (if you worked paying SS taxes sufficiently over your lifetime). So that is available to you even if you are not eligible for disability from SS.
Social Security Disability requires a 12 month duration of being "disabled". The 12 months need not have passed already, but the medical records must be very clear that you are and will be unable to work "substantially/gainfully" for at least 12 months. Thus, SSD is not for very temporary disabilities. That said, even if one can work a little, she can still be "disabled" for SSD purposes if she can not engage in substantial gainful activity. So, if one can only work, say, 10 hours/week and is not earning more than 1090/mo (gross), and the medical evidence proves they can't work more than those hours and can't work full time at ANY kind of work, she could win an SSD case and still be working that little bit.
Aside from that, you can also consider applying for state assistance, such as Medicaid or foodstamps, etc., at your local medical assistance office. Areas have different criteria for eligibility, but if your income puts you in the poverty range you may be eligible, so it can't hurt to apply.
Also, come states have temporary disability for workers who can't work due to non-work-related illness or injury - not many states, but some, including NJ, CA... RI I believe, so check if your state does. There are about 5 states or so that do.