I'm not sure that would be the best approach. If you are going down that path, there may be a better way. For instance, telling her you are ready to move on & want to move the D forward. Especially if she has been driving everything and you've been the passive one, she could read what your asking is more worrying that she is going to leave you and that she has you right where she expects you to be.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15