Based on the given tweet, determine the level of joy the author is experiencing. Choose from the following options: 0: no joy can be inferred, 1: low amount of joy can be inferred, 2: moderate amount of joy can be inferred, 3: high amount of joy can be inferred.
Tweet: After soul searching, I'd like to announce that I've chosen @chrissyteigen &amp; @nicolerichie to be my adopted sisters due to their hilarity
2: moderate amount of joy can be inferred