What does she mean to me? What should I do?

Is she a class cadre? If so, it may be entrusted by people (such as teachers) to encourage you and build your confidence.

If not, she may treat you as a younger brother, or think you are similar to her; It is also possible that she has some affection for you, and may like you as a cold person ~ ~

For you, if you bother her to do this, just say thank you for taking care of yourself these days, and then don't contact her ~ ~ If you don't bother her, treat her like a sister or something and be a good brother ~ ~ If you like him, just tell her. Under the present circumstances, maybe she will be very happy if she knows that you like her, and maybe she really likes you ... I'm not a sister, so tell her.