story: My mom was so upset after losing our first family dog. She missed having a dog around for years. My dad and I decided to surprise her one day with a new puppy. When my mom first saw the puppy, she cried happily. The puppy is my mom's new best friend.
 selected sentence: My mom was so upset after losing our first family dog.
My mom is upset after losing our family dog >Causes> My mom feel(s) depressed