It does seem like what she says to Taravangian here is ambiguous, and I can see taking it in an unsettling way. I think, however, an equally plausible interpretation, and perhaps more plausible, is that all of her backstage planning is simply to prevent Rayse-Odium from achieving his plans of splintering all of the Shards.
I think she set up Taravangian to be able to handle Odium so that he wouldn't be as consumed by the "destroy" Intent of the Shard's power, in hopes that T-Odium will be more controllable and she will be able to help him see reason and be an ally to the other Shards instead of a single-minded foe.
This all, of course, is I think the most straightforward interpretation of Cultivation's actions, which as we know can be misleading.