Jane Igharo’s “Ties that Tether” (Penguin Random House)Jane Igharo’s “Ties That Tether” tells the story of Azere, a Nigerian immigrant living in Canada who at 12, made a promise to her dying father that she would only marry a Nigerian man.Azere’s mother regularly reminds her of this promise as she sets her up with man after man after man, putting immense pressure on her to marry.Azere desperately wants to please her family, which is why when she falls in love with Rafael, who is white, she