Catherine, you absolutely did the best and right thing for yourself and your daughters. DO NOT DOUBT YOUR JUDGEMENT ON THIS.
A father who verbally abuses his daughter is destroying her self-esteem and causing her damage that she will carry into adult hood. Why should you feel guilty for removing your children from a damaging environment? You now have the freedom of giving them a happy and peaceful home.
Do not listen to his manipulations--he is likely to continue to put pressure on you and you will need to learn to detach from him. It is good that you have already made contact with alanon--an excellent move.
Please read t he Stickies--the classic articles at the top of this main page--there is a wealth of information contained there.
I am so glad that you found this site. Hang around. You can do this.
dandylion