Based on the tweet "@responficient11 there would likely have been signs. But let her grieve. It's not your yen yen yen, after all.", categorize the level of sadness felt by the author. Select from the following: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.