I signed out of the daughter's login. It seems to have stopped the demand for the password now. My wife doesn't have an Apps Sore account.
It was actually very hard to get to that point. The phone just kept repeatedly demanding the password three times in a row every few seconds. I don't know how many times I had to hit Cancel. It was impossible to use the phone too.
It is doing an iOS update. Downloading 5.1.1 at the moment.
Is the requirement for the Apps Store password because the iOS upgrade will need it to reinstall the App when the upgrade is finished?
It seems we should get rid of the daughter's app anyway to avoid this happening again. How do we do that?