Her car was in the driveway. Her phone was on the couch. Her dog was running around. Everything about Stephanie Parze’s home in New Jersey, her father says, seemed undisturbed — except that she was not there.

The last time her mother saw Ms. Parze, they had kissed goodbye after a night out with friends and family , according to a report. She asked her daughter to call or text when she got home. On the way, Ms. Parze sent her mother, Sharlene , a picture through Snapchat.

That was about two weeks ago, the night before Halloween . The family says they haven’t heard from her since. Ms. Parze, 25, had suddenly vanished.

On Wednesday, more than 170 law enforcement officials from New York and New Jersey descended onto Long Pond Park, a 115-acre preserve on the southern end of Staten Island, as part of the search, Chris Swendeman, a spokesman for the Monmouth County Prosecutor’s Office, said.