Madisgram is right Rose; don't start losing all hope now, as miracles can and do happen. Is it possible to get somebody to help you look into all options; section 8, and aggressively pursue the SSDI as at this stage with your work history and doctor's lines, you may qualify?

Also, even if you are unaffiliated with a church, you can still seek assistance. I know that St. Vincent De Paul provides help with the payment of bills like electric and gas, and runs a food pantry for anybody who comes in need. Church organizations usually don't require that you be a member to help out; so get in touch with your nearest Church to let them know about your predicament.

And absolutely, let your sister know what's happening with you, as she would be very upset I think if it were the case that you ended up in a shelter without her knowledge. We all get embarrassed about things like these, but it's not your fault and you have nothing to be ashamed of. You are on the prayer list Rose.