I'm thinking that in such situation the King and the Duke of Orleans may well switch spouses, as the youngest daughter of the brood is plain not suitable for the Queen but fit for Duchesse d'Orleans. Alternatively, Catarina of Braganca may end up in France, since the peace treaty offering TTL is not enough for "no aid to Portugal" clause.
Interesting so we could possibly see both sons of France struggling to get issue out of their wives?