Before she swung, she was promised a puppy if she gets a hole in one. So, the joy on her face could quite possibly be because she knows she's getting a puppy.

Side note I golfed one time. I was TERRIBLE. No clue what I was doing at all. I, being a really bad golfer using really bad clubs, took forever (and a bag full of balls) to go through a single hole. Although I do get the appeal of golf. I was on a par 3 and chipped in for a birdie. Many a high five were slapped.

That's was 15 years ago. Maybe I'll get around to trying again one day.