Do not feed. A six year old adult can go for months without eating.
At night you can put her in the tub and put the tub under the bedcovers with you to help keep her warm. The tub will keep her contained, ensure if she pees it won't mess up the bed, and stop you or your cats/dogs from rolling/stepping on her at night.
Thank you for remembering to mention not to feed. I completely forgot by the time I was done typing