Smart Cat·Graded Chinese Readers(Level 3):Jiajia's home

Due to the war, Yingzi's family left their hometown in the north and  moved to Chongqing. One day, she saw a homeless puppy on the mountain. Yingzi brought it back to her house and called it Jiajia. When the war had finished, Yingzi's family were about to return to the north, but they could not take Jiajia with them. What should Yingzi do?