The reason she kiled bill with the five point exploding heart technique was because she had her daughter back. Her main drive for vengance came from the loss of her daughter, but now that she was alive she was not so ruthless. Regardless, she still had to kill bill due to his actions and the fact that he would kill her if she did not kill him. Her last move of was one that showed that she was greater then bill because she was taught the technique, but it was not bloody due to her daughter. She was not just a woman who lost her child but a mother, she could not be as savage as she once was, but the bottom line still was there, she had to kill bill.
QT planned out this move, and while it might spawn an negative reaction it is really quite brilliant, it shows the growth and transition that is undergone in the bride, if she had just sliced bill up she would have been a static charecter, and that would have been poor on QT's part. While I was expecting an epic scene between the two, the scene in place is more rewarding in retrospect.
Politicaly Active Since 1992
'Soberity is not an option.'
Drivin that Train