Sarai dealt hardly with her. — The verb is translated afflicted in Exodus 1:11 and Isaiah 60:14; its more exact meaning is, Sarai humbled her, that is, reduced her to her original condition. It was quite right that as Hagar had abused her elevation, Abram should make her yield to Sarai all due respect and submission; but in making her resume her old position as a slave, Sarai was possibly dealing unkindly with her (but see on Genesis 16:9). In running away Hagar not only showed the untamable love of freedom which Ishmael inherited from her, but apparently was repeating the act from which she had her name.
Related Commentaries of Genesis 16:6
Genesis 16:6
6 But Abram said unto Sarai, Behold, thy maid is in thy hand; do to her as it pleaseth thee. And when Sarai dealt hardly with her, she fled from her face.