The girl I like sends a text message telling me how to reply when I am tired today.

You may think too much. . . 1) Let me ask you first, have you confessed to her? If not, others may say that they are tired because they are busy or have no time to chat with you temporarily. 2) If you confess and she rejects you, then she is avoiding you. 3) If you confess and she accepts you, then she may be really tired. Stress in study (at work) or some stress in life that can't be told to you (such as at home) will make her very tired, so you should be considerate of her in time, otherwise you may be oversensitive. If she is tired of going out to the Christmas party. ....................................................................................................................................................................