"extemporizing" meaning in English

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          "ref": "1925, F[rancis] Scott Fitzgerald, chapter 1, in The Great Gatsby, New York, N.Y.: Charles Scribner’s Sons, published 1953, →ISBN, →OCLC:",
          "text": "This was untrue. I am not even faintly like a rose. She was only extemporizing but a stirring warmth flowed from her as if her heart was trying to come out to you concealed in one of those breathless, thrilling words.",
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        "present participle and gerund of extemporize"
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          "text": "This was untrue. I am not even faintly like a rose. She was only extemporizing but a stirring warmth flowed from her as if her heart was trying to come out to you concealed in one of those breathless, thrilling words.",
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