Answer:
Practice and determination.
She's graceful and childish. But at the same time, Weena has her own personality. She has retained certain feelings that the other Eloi seem to have lost – gratitude, for instance. After the Time Traveller saves her from drowning, Weena keeps him company and tries to keep him safe and comfortable – in her own way.
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In paragraph 14, you just need to look at the text and think about what the paragraph is mainly about, then you’ll have your answer