Dear Abby: Should my friend move in with her abusive ex for her granddaughter’s sake?

Dear Abby: I have a friend, “Maron,” who is 65 and divorced from her husband, who had been extremely verbally abusive. Her adult son has a daughter by a former partner who had no interest in the girl. The girl, “Lizzie,” is living with her father (Maron’s son) in his father’s home.