The funny thing about language is that just a tiny little letter can make a fairly large difference. For instance:

Could you make someone *a* submissive (noun)? Maybe...if they were predisposed to kink, you might be able to persuade them to try "bottoming" for you.

However, change that noun (a submissive) into an adjective (submissive) and now it's a different ballgame. Trying to make someone submissive is like trying to make them dominant...they could try their hardest to be a dominant in certain situations and circumstances...they might even make decent "tops"....but they will never be DOMINANT.

I am in a vanilla marriage to an incredibly loving and kind man. He is not dominant in any way. However, he will (if I ask particularly nicely ) give out a spanking or two during sex. I enjoy it and he doesn't appear to hate it necessarily, but I know it's not his "thing" so I don't ask all that often.

And this is what the others have said...if the desire (craving) to submit is not there, it most likely will never be there. The question is, if she's kink-friendly...would she try bottoming?