Hammer to Crack a Tulip

How could I make a focus stack of a tulip in the kitchen with flourescent light giving 1/6 second and that at 6400 ISO?
Manual focus, silent continuous shutter (60 frames per second) and move the camera towards the flower. Result was 40ish images. Photoshop handled the stack well even though slowly.
Me - I was just impressed that it worked at all.

(edit - not sure where the 1/100 second came from)