Dream Decoding/No Reflection My Interpretation

In my dream there was a mirror that I couldn't see my reflection in. I think it means that sometimes It's hard for me to see my true self. It scared me because I couldn't see myself but then my sister seen me. I think it means that she could see me differently from the way I see myself like she could understand me more than I can. I think she can see what type of person I am more than I can is because I do a lot for her like going to the store and most of the things she does I do with her.