It wouldn't need to be something "palpable". Maybe one of those circumstancial traits on women saying that they have created a Court of Love if they are learned enough, romantic enough or narcissistic enough. Depending on the woman, it would spread events of culture, songs and increase of prestige and learning, or events of bastardy. Some knights might appear, representing troubadours, that can work for you or against you, for your enemies, with events like "X has written a
sirventes on you and now his jongleurs are spreading his filthy lies across the country!".
Also, it would need to be something focused on Occitan, Iberian (especially Catalan and Aragonese) and northern Italian culture (in a very broad sense; the Germans had a similar phenomenon, the Minnesänger, but they did not have this specific role of women and I think there are no Courts of Love in Germany).
Being a troubadour yourself (Like William of Aquitaine or King Alphonse the Troubadour), you could even have some events related to your works, or have a decision of "disgracing a rival by writing a sirventes" or honoring them by singing their glory.
Mixed together with a possible engine on the "Medieval Erasmus tour", where squires are assigned a master-at-arms, and young knights go away on a tournament tour across Europe, this can lead to actual relations between these turbulent youth and ladys holding courts of love. And then who knows? Heiresses kidnapped, bastard sons here and there, friends and enemies made...
