A woman charged in the execution-style slaying of her orthodontist husband exchanged scores of phone calls with the suspected gunman, then paid him nearly $20,000 after the shooting, authorities said Friday.

Dr. Mazoltuv Borukhova was arrested at her Queens home on Thursday and ordered held without bail on charges she conspired to have Dr. Daniel Malakov killed on a playground in front of their 5-year-old daughter amid a custody battle.

One of Borukhova's relatives, Mikhail Mallayev, was arrested in November on charges he was the triggerman.

"We believe she paid the shooter, Mikhail Mallayev, to kill Daniel after the couple separated and he won custody of their daughter," Police Commissioner Raymond Kelly said at a news conference.

District Attorney Richard Brown said evidence against the wife included phone records showing she and Mallayev had 90 phone conversations in the weeks before the shooting, and three more shortly afterward.

Bank records also show that, following a meeting in Borukhova's office, Mallayev deposited a total of $19,800 in 10 different bank accounts.

Borukhova's attorney did not immediately respond to a phone message Friday. Both Borukhova and Mallayav have previously denied any wrongdoing.

A gunman using a makeshift silencer and wearing a black leather jacket and a dark hat, shot Malakov in the chest in broad daylight on Oct. 28 and vanished, police said.

The victim had gone to the Queens playground to take his 5-year-old daughter to see his ex-wife, a specialist in internal medicine. The couple's daughter was placed in foster care following her father's death.

Police said they recovered the silencer at the scene and later determined that Mallayev's fingerprints were on it.