Of course, she was killed by a hitman. Only a hitman would shoot someone the way she was shot.
I've never heard the story about her being mistaken for this other woman, but if that is the case, why haven't they been able to prove it since it happened?
If it was meant to be for Jill Dando, I had my suspicions of who might want her dead, but nothing has ever been proved.
Unless they have new evidence, I probably won't watch it as it has been covered on the TV before.