The use of the word abruptly heightens the conflict by revealing to the reader that Mrs. Hale is becoming increasingly anxious.
The answer that describes the poetic technique used there is enjambment. The line "Ah, when she moved, she moved more ways than one:" is an example of an enjambment. An enjambment is <span>the continuation of a sentence without a pause beyond the end of a line, couplet, or stanza.</span>