We'll get a bed out of your house and put it in one of the rooms here so you'll have a dry place to sleep.
Building a platform bed out of a series of plywood cubes is a simple DIY project that is described in an article on the Popular Mechanics website.
Build it to last - There's merit in building a loft bed out of quality materials, like oak instead of the latest pressed board options.
Also consider making your dog a matching hat, leash cover, toy or bed out of any extra fabric you have.
At night, she can pull her bed out from the bookshelf, add a blanket on top and use the lamp to read a story before bed.