As far as you can see, little or no attempt has been made at securing your release. Your uncle, Albany, was an ambitious and callous governer. He ruled Scotland as if he was monarch, signing charters and living like a king. In your opinion, he has failed to govern effectively. You are furious!
Since his death in 1420, Albany's son Murdoch has held the reins of power. The opinion of the political community is that he is a complete incompetant. Use this to your advantage.