"If you believe"...

What makes you believe that she had any intent to attempt an attack?

Intent is where this falls apart, as she had no intent to harm with her vehicle. The interaction up until escalation by the agents was peaceful.

Even if the agent was in harms way, "totality of the circumstances" need to be reviewed before it can be said that deadly force was justified (see Barnes v. Felix ruling below)

https://www.shawbransford.com/supreme-court-unanimously-reje...

https://www.supremecourt.gov/opinions/24pdf/23-1239_onjq.pdf