Sentence 1: Mike went to the mall with his mom today. 
 Sentence 3: Inside the toy store Mike realized his mom was no longer with him 
 Sentence 4:  Mike went back out and found a police officer 
 Sentence 5:  The officer called for Mike's mom, and they were reunited 
 Option 1: Without telling her, he walked away from her and into a toy store. 
 Option 2: Without letting go of her hand, he walked with her into a toy store.