Why did Queen Elizabeth 1 kill people?

Answer 1

Queen Elizabeth DIDN'T kill Princess Diana.

Princess Diana (Princess of wales) Died in a car crash in Paris.

There were the "conspiracy theorists" who made that claim, because "it seemed" the Queen did not like Diana that much (maybe because Diana was willing to have contact with the "common folk" rather than maintain the "royalty stature" and Charles was starting to distance himself from her as he was losing interest.

Charles had also started to see someone else (which is a no-no by the Church of England)

So, as the conspiracy theory further contends, for Charles to continue with his other relationship; he would either have to divorce Diana (again a no-no by the Church) or she would have to become deceased.

What happened that night, no one can really say (as there are no living witnesses) so the statement by Buckingham Palace are "the events that took place".

Some believe it and others don't.

Answer 2

No.