Airhog~ First thing is you have to decide is exactly how submissive you are willing to be. Are you willing to trust her implicitly even if just for a short time?
I would suggest you give her
1 night (for starters). You can do it up cute. Make a "slave" contract. In the contract stipulate your safe word and any absolute restrictions (although I think she should know you well enough to know what you might hate.........of course that is exactly what I would use then
). Give her a time period say from 6 pm to 10 am. Then at 6pm get on your elbows and knees at her feet and await instruction. If you really wanna encourage her, buy her some sexy fetish clothes or accessories, a crop is a great starter, maybe even a book by a Dom! Give her the contract and all, in a box wrapped with a bow.
This is a great way to start! Then you can figure out what you like and don't. D/s can be a 24/7 lifestyle or just an enhancement to sex.
Sex is like a library............need lots of different types of books to keep it interesting, no one wants to read Tom Sawyer for the rest of their life