Children can immigrate to Denmark, but parents can immigrate?

You asked a lot of questions at once. Let me help you answer them one by one.

Because your daughter is under 18 years old and she follows you, you can apply for her to go to Denmark after you marry the Dane, but not if her daughter is over 18 years old.

How long it takes to apply for permanent residence varies from person to person. Danish law stipulates that it is five years, but the government will evaluate it according to individual circumstances. I came with my mother in 2009, and I can apply for permanent residence at the end of this year.

As long as you come to Denmark with a family reunion visa, you and your daughter can get a temporary residence permit. With this temporary residence permit, except for the right to vote and stand for election, other benefits are the same as those enjoyed by Danes. Your daughter/kloc-under 0/8 years old, the government subsidizes 800 kroner per month. After reaching 18, if your daughter is studying, you can apply for Sue. The amount of Sue depends on your monthly income. If you don't work, your husband can apply for tax reduction.

The visa for family reunion should be passed immediately, and it cannot be delayed.

I hope my answer can help you!