We can infer that in the story it’s around nighttime, as the mother is putting her children to bed, yawning, and setting her alarm clock for the morning. The fore, we can assume that she is tired and about to go to bed.
I think All because we have to check for coherence just in case there are INcoherence words that don't make sense and the grammar might be written with mistakes. So also Proofreading and reviewing the sentence structures! ALL OF ABOVE
