Final answer:
The passage does not explicitly answer how Ruthie learns to walk without a limp, requiring inference about her recovery which may include determination, support from others, or medical help.
Step-by-step explanation:
The passage provided suggests that Ruthie may have been struggling with physical mobility, but does not directly state how she learns to walk again without a limp. Through the context, we can infer that there is a focus on healing and recovery. If Ruthie were a character in a story, her overcoming a limp could be attributed to determination, perhaps the care of another character, or physical therapy. However, with the given information, we cannot definitively conclude the method of her recovery. Comparing this inquiry to situations in the given passages, we learn about characters overcoming physical struggles, often with the aid of supportive figures or medical intervention.