In a slightly more evil thought experiment (Harvey Dent might approve), we could make one slight change: if it's heads we interview her once and then let her go

In a slightly more evil thought experiment (Harvey Dent might approve), we could make one slight change: if it's heads we interview her once and then let her go, but if it's tails we'll keep on waking her and interviewing her every day for a thousand years. I think this version makes it clearer: if it's heads she'll be interviewed once, if it's tails she'll be interviewed thousands of times. At any given interview she should assign a very small probability to the possibility of heads.