You hit it on the head Arlan that is exactly what he has been doing. I hope she finally gives up and since Martha will tell her that Drayce is good for her and will be able to protect her in the future as her husband.
I guess the wedding will be soon now that Marth brought somethings to light. I hope the king and crowned Prince can be at ease now and entrust Seren to King Drayce.
I guess Marth confirmed it wherever she went. I remember after Seren told her of what happened that is when she decided to leave to enquire about these things.