"Rebecca \"Bex\" Mack is the free-spirited daughter in the Mack family. She is played by Lilan Bowden. After a long absence, Bex returns home on Andi\u2019s 13th birthday to get her life back in order."@en . . . . . "Rebecca \"Bex\" Mack is the free-spirited daughter in the Mack family. She is played by Lilan Bowden. After a long absence, Bex returns home on Andi\u2019s 13th birthday to get her life back in order."@en . "Bex Mack"@en .