I think what you want most is for her to build a relationship with her dad. I also think that you believe that path is to have DSD "get it" - if she were to understand, then Dad wouldn't be the bad guy anymore.
You're probably right. I just don't know that it's the sole solution to building that bridge.
You've read Divorce Poison haven't you? Combatting parental alienation isn't always direct combat with the alienating parent. There are some covert ways to battle what's going on in your situation.
...and you can't ever give up hope.