My poor rabbit has cancer, how can I help her?

Hello everybody, yesterday was a very hard day for me. My nine year old bunny was told she has no chances of surviving. She was spayed too late (in november last year) and I thought she'd pull through but the cancer spread. She is still eating and drinking water although she's dragging her hind legs a little bit probably because it hurts her. It pains me because she wants to live and I can't save her from cancer. Has anybody ever had a pet survive cancer without chemotherapy, and what can I do to help her. I'm trying to feed her as best as I can and taking her out into the sun everyday for a bit. Is there anyway to suppress the tumor growth? Please help me, I'm very sad for my bunny.