I have a younger sister who was raised by others. She borrowed money from me for the first time, and I borrow it now. I didn't borrow it (but because I really didn't have money). She published it.

Your sister's ignorance has nothing to do with you. I think the best thing for you is that you don't go back and be told anything more in silence than they are told in voice. She will come back for you later, or she will write down all the facts. She may delete the story, but your relationship is basically over. Why do you embarrass yourself? Did she pay back the money last time? Why doesn't she know how to be grateful? Don't spoil her too much