The daughter and her boyfriend were later found at another hotel about 15 kilometers ( 9 miles ) from the St. Regis . Heather Mack , 19 , and Tommy Schaefer , 21 , of Chicago area confess , police say . They had been charged in the death of Mack 's mother , Sheila von Wiese-Mack, who was found dead at her home on July 22 after a long struggle with cancer. Motive was how mother `` was against Schaefer 's relationship with Heather , '' police say . Daughter was at the killing scene when her mother was killed , police say .
Heather Mack , 19 , and Tommy Schaefer , 21 , of Chicago area confess , police say . They had been charged in the death of Mack 's mother , Sheila von Wiese-Mack, who was found dead at her home on July 22 after a long struggle with cancer. Motive was how mother `` was against Schaefer 's relationship with Heather , '' police say . Daughter was at the killing scene when her mother was killed , police say .