Whywould anyone willingly go away with someone who abused them?

wow! I am so sorry for all that you've been through but I really don't understand what exactly your question was. Were you asking why your step-siblings went with their father? If so, simply because they were children and because he is their father. Whatelse do you expect. But listen, I am not clear on some things. These events happened ten years ago? Did you get any counseling? Are you okay now? My God this is terrible, and instantly, I I know the language in which a father is called baba. I have my doubts about something anyway. Whatever. If you need further help, and you think you wanna talk more, contact me.