That may've been the case at Unimatrix-01, but Borg that were not around her may've continued to function normally despite here death. This is supported by the fact that the Borg Sphere that was pursuing Voyager continued to function (and attack Voyager, weakening it's armor) even after the Queen had died.
Dow and Union Carbide to merge: two companies that have profited from the deaths of thousands. By Martin McLaughlin. 6 August 1999. Dow Chemical and Union Carbide announced a corporate merger Wednesday, with Dow acquiring control of the smaller firm through a stock swap and assuming its debts, in a deal worth $11.6 billion.
9 This was the Dow's close at the peak on January 11, 1973 before the 1973â74 stock market crash. 10 This was the Dow's close at the peak of August 25, 1987 before the Black Monday stock market crash. 11 The Dow reached an intraday high above 3,000 for the first time on Friday, July 13, 1990, before falling back below by the close.