Genesis 16:6 So Abram said to Sarai, “Indeed your maid is in your hand; do to her as you please.” And when Sarai dealt harshly with her, she fled from her presence.
When Abram gave permission to Sarai to deal with Hagar, it was not permission to take her life or to be evil toward her.
Sarai exercised her right (well within her rights according to the law of that day) to be harsh toward Hagar and as a result Hagar ran away.
When we do things that are not right, other people get hurt as well as us. Think about the results of your actions and just maybe your actions may be more in line with God’s will…