I understand what you are saying, on the one hand, painted as you have there was nothing wrong. However on the other it was a complete shambles, symbolic of her time as PM.
If she was an authoritative figure, who had been demonstrating her supposed strong and stable credentials the past year...
Since when do political parties act in the national interest, particularly the tories.
They will be calculating the most likely way of staying in power regardless of the national cost.