Sarah Palin may be Sen. John McCain‘s (R-AZ) former running mate, but she was reportedly shocked to hear that’s a decision the one-time presidential contender regrets.

In McCain’s new book, The Restless Wave, the senator writes that he regretted picking Palin as vice president for the 2008 election — a claim he has made before — and one Palin says she can’t believe.

Hearing the admission was “like a perpetual gut-punch,” she told DailyMail.com. “I attribute a lot of what we’re hearing and reading regarding McCain’s statements to his ghostwriter or ghostwriters.”