My Secret Sibling

Hi I'm Chloe, I am 15 years old and I don't know much about my past. I have asked my dad about our past before and the most he has told me is my mom left us. I have never tried to look for her because my dad seems to think that it's a lost cause and a waste of our time even if we do find her. I try not to bring our past up around my dad a lot but the other day I got a text from an unknown phone number (and it's long range to) from a person claiming to be my twin sister. I want to talk to her more but I have a feeling I should tell my dad about this first....

This are all my ideas if I clearly reference something I will give credit at the end of the chapter. If something of similarity comes up and I do not give credit it is just pure coincidence.