I grew up with 2 sisters who are half-siblings (10 yrs older, and 3 yrs. older). They didn't like my father. They also always made sure to tell me I wasn't their real sister, and would be leaving as soon as they were out of school. As a result, I felt very isolated. True to their word, they left - first, the eldest dropped out of school and left without warning (with help from her father & brothers). The sister closer to my age, left as soon as she finished high school. I am mostly emotionally attached to my brother, who is 7 years my junior. He and I have similar personalities.