Char and Russ Disrupt have one daughter, Siera who is 16 years old. In November of last year, the Dasrups took in Siera's 16 year old friend Angela, who has lived with them ever since. The Dasrups have not legally adopted Angela but Siera often refers to Angela as her "sister". The Dasrups provide all of the support for both girls receives any income during the year, and both girls live at the Dasrups residence. Which of the following statements