Thought...
I'm thinking that we can skip to pass a week - the assassin has already been introduced to the household as a new maid and has been at D'Larrie's shoulder following her around as she learns her new role in the household. She works on Roan's side of the house, but frequently has to assist on Suri's side.
Then, one day when Roan is in town at a city meeting about his nomination, the assassin attacks Gardosh in the attempt to kidnap Suri. With her skills, she using various tactics, including chemicals, to knock him out - but not kill him. Or, she thinks she's killed him, but didn't. She gets to Suri and knocks her out and almost gets her out of the house, but Gardosh stopped her. The assassin escapes without her package.
Roan returns to learn what has happened and decides to push forward to speed up Suri's betrothal plans. Suri and Gar decide that it will be a good time to make her announcement now - to get her out of the situation and hopefully - if Suri can, to get her out of that house and hide with Gar in the woods where he's in his element and can protect her proper.
When she tells Roan, he sends Hawkwin to search for him, but they find that he's long gone. Her father decides to push forward with the wedding anyway. HE's planning on lying to the other Lord about her condition. But Killeens suggest to bring in the Physician to see if she has lost her maidenhood. This strikes fear in Suri and D'Larrie because they know she hasn't been deflowered.
Not knowing what to do, she sneaks out of the house through her secret tunnel - no one knows where she's gone. Gardosh had told her where he will be located, but with no idea where exactly to look, she ends up getting lost in the thick wooded area around the estates. He finds her and she tells him what has happened. And they can just go with a new plan...one they've been thinking about for a while by this time. Afterwards, he gets her back to her room. Through the goblins, Suri is updated on Gar's situation, and he's updated on hers.
I think that after the Physician proves that she is not a virgin anymore, Roan loses Foneroy... he loses the nomination... the monies from these ventures he was hoping for are now lost, and everything breaks down for him - all except the threats on Suri. There's no way he can pay the pirates now, unless he just sell off everything, or give Suri to them instead.... TWIST!