Accuracy. Not asserting as true utter BS because you've swallowed it and can't be bothered to find out whether it is true or not? I'd have thought that a moment's thinking would have raised questions as to the likelihood of any government minister being invited to sit in on a birth....
To be clear, I can't think of a single thing I agreed with Anne Widdicombe on. I didn't agree with, or like as a matter of personal opinion, any of her political beliefs and many of her personal ones.
It was Government policy that all prisoners, including pregnant women, be handcuffed while being transported from place to place. It was never Government policy that a pregnant woman be handcuffed while giving birth, in fact the policy explicitly said that once labour is confirmed all restraints must be removed. In Parliamentary debate and in her capacity as the junior Minister at the Home Office responsible for that policy, she confirmed that position, so the policy, along with herself personally was still criticised - fair enough. But she never made such a demand while witnessing a birth and never in fact called for the policy to be extended to that.
2 minutes Googling would have got you there. Which you might want to bear in mind when you're making your long list.
Chris Mason's piece on the BBC news website is a pretty balanced assessment of her.