After being away from home, who greets you at the door? A child? Spouse? Beloved dog? Maybe a neighbor or a renter?
How does it make you feel to be loved so much that someone waits for your return?
Now think about your protagonist. Close your eyes and visualize who greets her.
Your task is to write that story. Your readers will want to see the details and feel her emotions. They yearn to experience what she’s going through, down to the smallest detail. For example, does the puppy pee on the floor? The cat rub her legs? The birds chirp loudly?
Perhaps not only happy things occur. Maybe someone left a message on the answering phone that a relative is gravely ill or has died. Or that they are coming for a surprise visit arriving in an hour. How does you character react to those bits of news?
Remember that all stories need conflict and tension, so while writing the happy arrival story include some piece of conflict.
Have fun with this one.