I'm alright, but I fired the sitter.

[EngLearner]

Peter and Sarah are a husband and wife. Consuela babysits their son, Billy, while they're at work. One day, Peter says to Sarah:

Sarah, call your mother and ask her if she can babysit Billy tomorrow. I've fired Consuela.

I made up the above example. Since Peter is talking about Consuela's current status, it should be "I've fired Consuela." (as I wrote), not "I fired Consuela." Please correct me if I'm wrong.

Now, I watched a movie called "The Sitter," and there was the following scene. There was a husband and a wife, and they had a babysitter, just like in my scenario. That babysitter turned out to be obsessed with the husband. At the end of the movie, there was a fight between the wife and the babysitter. The husband was tied up, so he couldn't help his wife. The wife managed to kill the babysitter, and right after that, she and her husband had the following conversation:

Husband: "Honey, are you alright?"
Wife: "I'm alright, but I fired the sitter."

Here's a link to that moment in the movie (timestamp: 01h25m57s).

Why did she use the simple past "I fired" rather than the present perfect "I've fired"? Is "I've fired" equally appropriate in this case?

 

[jutfrank]

Why did she use the simple past "I fired" rather than the present perfect "I've fired"?

You're still asking the same questions, EngLearner. You really ought to know the answer to this by now. The reason is that the speaker is presenting the firing of the sitter as a past event.

Is "I've fired" equally appropriate in this case?

In your example about Consuela, Peter uses the present perfect to show the present relevance of having fired the babysitter. Yes, it's a decent example of the use of the present perfect.

 

[5jj]

You're still asking the same questions, EngLearner. You really ought to know the answer to this by now.

Right. I am closing this thread @EngLearner, and will delete any similar threads you may start.