She wasn't peaceful, she was unlawfully breaking into the US Capital bldg.!

Her death was warranted and appropriate.

That bldg is the symbolic holy of holies, and off limits to insurrectionists; had they tried to break into a prison or police station the result would be the same, albeit with more deaths.

Congressmen were inside, the police had the legal right to use deadly force.

I note that the family of the deceased woman have dropped their wrongful death lawsuit: lawyers don't like cases without a likely pay day.