Analyze the following tweet to determine the level of sadness expressed. The levels are: 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.
Tweet: @everybodyzzmama I've finished reading it; simply mind-blogging. The writer said 'to be continued' but I haven't found part 2. #depressing