she could try the following:
"Well brother Elder, I am barely a good publisher. The principle of 'counting the cost' comes into play. It leads me to believe I would be a really bad pioneer. I think it is best to improve myself as a publisher first. I can set pioneering as a goal but want to develop more as a publisher first."
They will counter with "pioneering is the best way to become better." but she can stand firm. They will most likely be led to believe it is a self-esteem/lack of confidence thing as opposed to a spiritual problem.
Just one idea.