Alexander was quite a bit peeved when the Margraves family council members refused to swear Lady Miranda in as the new head.
Sure given that they were in the middle of a war, the entire thing might have been purely ceremonial.
But one should not also underestimate the effects of a purely political move.
The ability to firmly say that Lady Miranda was chosen as their head by the family during the negotiations would have been a great card to have.
However, try as he might, the Margraves council members refused to budge, claiming themselves to have become apolitical.
While at the same time, Lady Miranda appeared also reluctant to apply greater pressure. For her, it was already considered a victory to make them flip from actively supporting her sister to becoming neutral.
And she feared that if she were to push them too hard, instead of becoming hers, they might simply secretly flip back and stab her in the back at the crucial point.