Answer:
King Henry would most likely feel a bit of guilt for locking her in the tower to her death. While he was very determined to produce a male heir, he was still a Christian with Christian morals. As to his response, I'm not sure if a response is truly necessary since the letter was more of a "please don't forget me, and you are condemned to dam,nation for this" declaration. If he did respond it would probably be a senseless justification for her imprisonment and perhaps an apology.
Explanation:
Most Americans were in the middle of happy but a little mad. It helped get Reagan elected because he was part of that.