This is Sunfall, one of the senior warriors of Wingclan. She has no siblings or father that she knows of, but she had a mother named Sunshine. Of course, her mother died at too much blood loss during Sunfall's birth, so she never got to meet her, but she's visited by her mother in her dreams from time to time. Angelstar's mother, Sandstreak, took her in as her own and named her after Sunshine. She had promised if anything went wrong and Sunshine didn't make it, then she would raise her kit as her own. Sunfall later grew a crush on an apprentice when she was a kit, an apprentice named Berrypaw (aka Berrywhisker). She still has a crush on him to this day, but little does she know that he feels the same towards her as she does to him.
Credit to @lord-of-dogs The characters and clans all belong to me