I live in England, but I have read that the Susan G. Komen Foundation in the US are very helpful to those in need. Even if they are unable to help, they may know of organisations/charities that could. I am sorry I don't have their phone number, but if you google them, you may be able to get it from their website. However, she seems seriously ill, and I would wonder if she is able to make such a long journey.
I do hope you get some help.
Liz.
I posted the question on travel services for my aunt who has breat cancer. I forgot to leave my contacts. My cell phone number is 574-261-2266