Rather than frustrate him, he found it entertaining.
"It makes me happy that I might frustrate him as much as he does me," she said.
She helped to frustrate the conspiracy with France which John concocted during Richard's captivity.
In the policy of which it was the outcome she enjoyed the support of the Chancellor Michel de l'H6pital and the lieutenant-general of the kingdom, Anthony of Navarre; while on the other hand the heads of the Catholic party had attempted to frustrate any form of negotiation.
Also, as we are masters of Ulm, we cannot be deprived of the advantage of commanding both sides of the Danube, so that should the enemy not cross the Lech, we can cross the Danube, throw ourselves on his line of communications, recross the river lower down, and frustrate his intention should he try to direct his whole force against our faithful ally.