Peter and Johanna approach you

You are overseeing some trade business at the courtyard, when two of your subjects approach you. They both seem to be quite happy.

Peter: Lady Lily, may I speak to you?

Lily: You may speak freely, Peter.

Peter: My lady. Johanna and I were planning to marry each other for years now... Both of our fathers allowed the marriage, we only had to gather a large sum of money, to be able to pay for the event. Thanks to your kindness, we have the money now at hand!

Johanna: We are both immensely grateful to you for your help!

Peter: All we need now my lady, is your consent. As our lord is gone for the time, you are in charge of deciding such matters. Please, will you allow us to get married?

Johanna: We would be forever in your debt! Please my lady!

You see the happiness in their eyes... They have the money and every legal document and consent except yours to start the marriage process. How could you stop two young people from being happy for each other?