Of course not

Marcie cursed herself mentally as she watched the 1860 version of Darla use Marcie's own gun to shoot future Rose Tyler. How could she have been so stupid as to go for the gun instead of the stake? And now future Rose Tyler, one of the few people apart from her current employer who had ever been nice to her -- a niceness that seemed especially surprising since future Rose -- unlike her current employer -- never seemed to have a secret motive for her niceness -- was about to die because of one of Marcie's mistakes.

Marcie never thought she had much of a conscience. In fact, she knew she didn't have much of a conscience. She had made the choice to join Team Evil a long time ago and was quite surprised when her employer asked her to do what others might consider a heroic deed -- safeguard her family.

"Why can't you use the magic typewriter?" Marcie remembered herself asking her employer.

"Because these are real people, not fictional characters," said her employer.

"But I'm a real person too," Marcie had said. "And you used it on me."

"That was just a test," her employer had said. "I knew that you would be okay with it, even if the test failed. This is different. This is life or ****. If something goes wrong, my family dies. I don't want my family to die. They did so once and it almost drove me mad. Oh, whom am I kidding? It did drive me mad. But now I have a chance to save them. I never had that before. Before I was dependent on Grandfather and Grandmother for my very life. But now I have a chance to change all that. Now I can save them and if I'm extremely lucky, I can even save me. The younger me, at least."

"But you're talking about an attempt to change the past," Marcie had said. "That's not something that can be done."

"The one thing I learned as a you-know-what is that anything can be possible if you make the right effort," her employer had told her. "What's this old saying that my friend Celeste used to tell me? Oh, yes. What can be imagined can be done."

"But why me?" Marcie had asked. "Why not a professional vampire slayer?"

"Because the Slayer I know best has a history with Grandfather," her employer had answered. "And almost any other vampire slayer would laugh in my face. Yet you I can count on. I suppose I could just dress Rose up and tell her to go fetch but I could not count on her being able to handle herself if she encountered any interference. And since Grandfather and Grandmother are involved, there will be interference."

And sure enough there was interference. And now future Rose Tyler was de --

Wait a minute! Marcie thought. She's still standing. Why is she still standing? Darla shot her at point-blank range -- and yet there wasn't a mark on her.

"It's a miracle," said Drusilla as she gazed upon the sight of a naked future Rose Tyler somehow surviving what should have been a fatal gun shot.

Drusilla sank to her knees and started muttering a prayer of thanks.

Future Rose just looked dazed as if she was just a bit shocked to find herself still alive.

Darla just frowned and said, "I don't believe in miracles."

Then she took aim once more at future Rose and fired again.