She was trying to make the point, that limits for expenses should not have been imposed on MPs retrospectively and was implying that MPs should be trusted to govern themselves.
However, her words have inadvertently described what a large majority of the voting public must be thinking about the whole sorry episode.
During an interview for the BBC Ms. Widdecombe said:
"if we can't govern ourselves within the rules of natural justice we certainly ain't fit to govern anybody else"
Well, it seems they have proved that they can't .... and many in this country think that they are not!