A nice gentle way to impose your dominance over her and have a lot of fun doing it is to have her join you in the shower or tub and make her wash you top to bottom. Sex while bathing is optional. Followed by;

A nice massage,

Then have her ride you, doing alll the work. Don't even touch her until after she's satisfied you.... finally,

Tie her up so she can't resist and give her a great orgasm or three.