It's not what we want though. If it was what we want, it would have already happened. There would be no need to jump through all these hoops, CRX would just send letters to the relevant parties and they'd all happily come to her.
That she hasn't makes it clear that she doesn't want retainers from all the count clans.
Do you think the Meng would be here making this offer right now if both we and CRX had decided to say, argue for the military or economic benefits when presenting the White Shy situation to court at Xiangmen? Options that the Meng either did not care for or disliked.
DId you forget that this was brought on pretty clearly because we used the Cultural Bonds Arguments which the Meng liked. Hence why the woman who saw us making that argument came personally instead of sending a messenger?
Do you understand that we are likely only getting the personal visit of a member of the Court because she saw that her family could work with the Heiress and LQ, and that this is a huge opportunity brought about by our actions?
Do you understand that her showing her face personally to make such an offer, than doing so in person. In political terms is in fact a huge fucking deal, and demonstrates an enormous amount of good will and demonstration that they are entirely willing to risk being seen and that they are taking a bit of a risk and thus they are being honest here? The same impact could not have been done with letters. Sure it could have still be arranged. But it would lack the personal touch, the personal show of respect, the public demonstration that some degree of agreement has been reached.
This is fucking huge in the politics.
As for "This isnt what we want. Because this would have happened anyways". No it very much could have worked otherwise. CRX is known to be disliked by the Chancellor. Lady Cai is publicly making moves, like hiring a goddamn Medicine Saint, that shows that at the moment she might care for her second daughter more than CRX.
Furthermore, CRX herself is enormously young for a cultivator, nevermind the heiress of a clan. Nevermind the heiress of a Ducal Clan. There is in fact absolutely zero rush for the Barons and Counts to try and curry favors with her. When they could easily sit back and wait a few years to see how tensions between CRX, her sister and the Chancellor plays out, see whose policies benefits them more and then give their support. There is literally no reason for Clans to be competing with each other to get on CRX's good side at the present, because there are very little real benefits to them at the present.
CRX's position has been strengthened incredibly by the current armed conflict, hers and ours performance in the conflict so far, and the political bomb we threw at the Court with the White Sky. Events, and our actions in response and to take advantage of them, have made some like the Meng, and likely Bao and Wang decide "Eh you know what, Ogodei Mark 2 incoming. Its not a bad idea to invest in the young heiress now."