Possibly the reporter will feel insulted if I tell her I’m recording our talk for accuracy; if so, I’d try to explain that my firm has instituted this policy for all media interviews, and that it’s meant neither as a slight nor as an aspersion cast on her integrity. But if the reporter is miffed, she’s miffed; better that, to my mind, then starting off what I hope will be a mutually beneficial relationship by taking a serious measure like recording a phone conversation without being upfront about it.