A noodle is a type of pasta that is soft, so saying that her backbone was like a noodle means it was flexible, not rigid
Context: "This morning, she tried to get out of bed but the blankets and pillows were in the way; she could only flounder gracelessly up to her elbows, and her backbone felt rigid."
Hypothesis: This morning, however, blankets and pillows thwarted her; she could only flounder gracelessly up to her elbows, her backbone like a noodle.
Based on the context, is the hypothesis true, false, or unknown?