Hope you don't mind but I copied your opened letter and posted it in one of our small Catholic Forums to find out how they would answer you. I like the following:

Dear Brother in Christ,

It is a blessing to know that you and other Catholics, as well as non-Catholics, find comfort and inspiration in our small ministry; that's what makes this worth while.

The one area I'd counsel caution in is that where you comment on Vatican II and on our bishops. Here we must all be careful not to yield to … [Plus]