There is a girl who always sends me text messages. How can I refuse?

It may be that she lacks intimate friends around her, so she relies on you so much. Those little things in life that seem boring to you show that she just wants you to care about her. All the hints you gave her were useless. If you are really bored, you might as well tell her directly. If you give her a little hope now, you will be bored if she goes on like this.