I know this sounds logical...let's see where we agree and were we don't.
"... that lady was responsible for her actions that lead to her death."
"Her death is a consequence of her actions."
I agree with that, hence she is responsible...
our point of contention is the word 'alone'
I understand that you say "Her actions were not the actions of a rational person, and they were directly incited by some other people,
to stop this from ending peacefully with negotiations." to remove her agency. This is but a belief and I don't share it. I hold that she had agency.
If I were a pedantic slashdot twit I'd point out the tension between your statement "that that lady was responsible for her actions that lead to her death." and your subsequent removal of (at least some degree of) her agency.
She made a bad choice. She's dead. The other people may have influenced her choice, but the buck stop here, they are responsible for their bad behavior, she is responsible for the consequences of her choice. If you don't stop the buck, the idea has no end...her parents are responsible for her death, the media is responsible for her death, her bad boss is responsible for her death and so on...
You can of course remove human agency but then this idea of 'responsibility' is moot to begin with.