She said she wasn't getting paid what was due her in affiliate commissions. How can you "beg to differ"?
She didn't say she had a problem with the product. In fact, she said: "I read this book, found it helpful, and gave it several positive mentions in my e-zine."
The owner of the Duct Tape Marketing should be jumping through hoops to insure that she gets her money (ie. PayPal it). The miscommunication is HIS responsibility to correct -- not Martha's.