The entire book is set in a small life raft where the author struggles to catch fish, capture water, plug holes and stay alive for 76 days. (goodreads.com)
Perhaps you could consider an ocean / boat print, a circle life raft or a big anchor above her bed, she has lots of mirrors in there already. (tatertotsandjello.com)
The ill - fated souls below circulated rumours; The slightest dent in the ship could send it to the bottom, there are only enough life rafts for CAs, Canadians will be trapped on board if the ship capsizes, the frigid water will kill you in 3 minutes at least the beer will stay cold, no use praying, our Canadian banking system wont save us this time. (canadianbusiness.com)