How about this :-
M was a demanding child as many 3 year olds are. They sedated her and her younger twin brothers in order to better enjoy their leisure time with friends - they are both doctors after all. Something went wrong - either she was accidentally given an overdose or died in an unrelated way but sedative would have been found in her system. They could not go to the authorities because they would have been struck off and their twin sons taken into care. In order to protect the twins they somehow hid her body and engaged in a charade of abduction and subsequent life as parents of an abducted child. At some point in the future (possibly when the twins turn 18 in 2023) they will finally reveal what really happened.
Something along those lines seems more likely than a conspiracy reaching into the heart of government.
Or M was abducted.
M was a demanding child as many 3 year olds are. They sedated her and her younger twin brothers in order to better enjoy their leisure time with friends - they are both doctors after all. Something went wrong - either she was accidentally given an overdose or died in an unrelated way but sedative would have been found in her system. They could not go to the authorities because they would have been struck off and their twin sons taken into care. In order to protect the twins they somehow hid her body and engaged in a charade of abduction and subsequent life as parents of an abducted child. At some point in the future (possibly when the twins turn 18 in 2023) they will finally reveal what really happened.
Something along those lines seems more likely than a conspiracy reaching into the heart of government.
Or M was abducted.
Religion is regarded by the common people as true, by the wise as false, and by the rulers as useful. — Edward Gibbon