with respect it's no good putting it on a rail forum, the daughter was travelling on a bus. As someone who has driven buses for far too many years, I have some sympathy for your daughter, but fare evasion, and that includes not being able to show a valid free pass, is endemic on London buses. Presumably she was caught by a revenue inspector on the bus? They've heard every possible excuse so many times, excuses tht have been around since the days of the introduction of horse buses by George Shillibeer in the 1830s. They just don't wash, I'm sorry to say.Was she given the opportuity to pay a are to the drier by contactless card? that is sometimes allowed.
But as others have said, TfL is very unfeeling for the likes of people who make a genuine mistake.