Kristal Delvalle declined to testify before a grand jury at a court appearance on Thursday.
Kristal Delvalle, 23, was ordered held without bail on Tuesday night.
Kristal Delvalle stabbed Norberto Cruz-Valentin to death in their Concourse Village home, police said.
Brian Quattrocchi was charged with attempted murder, kidnapping, assault and attempted assault.
Officials attribute the increase in part to their outreach in the community.
The officers were responding to a report of a domestic assault at 1230 Hancock St., police said.
Brian Solano shot and killed Willie Lora in the lobby of 1566 Macombs Road, police said.
The Flushing man broke his wife's eye sockets and knocked out her teeth, sources said.
The man attacked his 62-year-old grandmother in their St. Nicholas Ave. apartment Wednesday, cops said.
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