Ok, I understand some of the criticism now. 1.) She cut funding to the fire department budget by millions of dollars. 2.) There is a video floating around where she is totally unresponsive to questions.
"That assertion is wrong. The city was in the process of negotiating a new contract with the fire department at the time the budget was being crafted, so additional funding for the department was set aside in a separate fund until that deal was finalized in November. In fact, the city’s fire budget increased more than $50 million year-over-year compared to the last budget cycle, according to Blumenfield’s office, although overall concerns about the department’s staffing level have persisted for a number of years."