My mothers pieced quilts what are the two images in the poem

The poem is about the relationship of a nostalgic lyric self with his mother, who was a seamstress. A first image is found in the following fragment:

/ how the thread darted in and out

galloping along the frayed edges /

She exercises her trade with a thread that seems to gallop on the cloth.

Then, a very evocative image that describes his mother / you were the river current

carrying the roaring notes forming them into pictures of a little boy reclining

a swallow flying /.

In both cases, the visual aspect is used to improve the lyric quality

3rd person, because the narrator is out of the story but explains the feeling of the main character

i am not sure if this is the correct story but i think the answerr is when twain's confidence when he asked twin a question

explanation: