There isn’t, the Warhammer mod just added a decision rulers can take if they have more land than their spouse to force change the marriage type to favour them, basically an after the fact fix for the stupid ai.Actually (though I might remember it wrong), I think there's a weight variable modders can change in the defines that changes the AI's willingness to marry matrilineally. I do believe the Warhammer mod even increases it rather drastically (again, don't quote me on this). As a result, a female ruler is more likely to marry a lowborn matrilineally or not marry at all.