FLAG 12: ( 1071)
It is White's choice to insert the kikashi of , , , , in the upper left corner just now, before securing her group on the left side with a move at .

Strengthening Black's shape to the left does not matter, as long as the shape to the right is not yet fixed, which means as long as there is no Black stone at already on the board (combined with Black having sente).
However, White must be on her guard thereafter, to not allow Black creating another ko-shape on the upper edge ( 1077).
This all is independent from Michael Redmond's kikashi of in the bamboo joint.