Did she deliberately send the wrong message? What is the probability of sending an error message?

It is possible to send the wrong message, but if you always send the wrong message in a short time, there is something wrong. I think she may still like you a little, perhaps to attract your attention again. Maybe I don't think you are active enough to give you a chance. When she sends out the wrong message, you should look for opportunities to further contact with her, so as to have a good development. Seizing the opportunity is the most important thing.