The difference between the two terms? "My bank account number is XYZ" is something I might say in a public place – namely in front of a bank teller. But I wouldn't expect that an evesdropper is standing next to me to post that information on my profile page. Respecting this last expectation is contexual privacy. Information privacy is whether I said it in a public place or not.
In citizen interests, let's hope she's someone lawmakers can understand and seriously consider.