Your dd is allowed as a human being, a different opinion to you as to whether or not anal sex is acceptable.
FWIW, anal is not my cup of tea, never has been, never will be. That's not to say I judge those who do (and I know boys and girls who enjoy it).
You're asking people to not judge you on here but I'm sorry to say you've been the most judgemental of everyone.
You have states that there is a "type" that has anal sex, clearly someone who is unintelligent and not sensible, unlike your dd.
I'm not having a go at you, and neither do I feel angry or upset by some of your comments. I actually feel sad that you are so blinkered and that you're potentially going to think less of your dd over something that is not an issue.
The duty you have to your dd is to ensure that you've educated her on safe sex from the risk of unwanted pregnancy and STDs. And that any kind of sexual act, from kissing to sex to spanking and whatever else MUST be mutually agreed and she that she mustn't feel she should do anything she doesn't want to.
OP, I respect your very strong and clear morals and boundaries, you must give your dd the same respect.