OAKLAND, N.J. (CBSNewYork) — A desperate search is on for a New Jersey woman who has been missing for nearly a week.

Meaghan McCallum, 30, was last seen Tuesday night at her grandmother’s Montvale home.

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Her family believes she went on a date with someone she met online, CBS2 reported.

“(She’s) a wonderful, wonderful sweet person, works with the elderly,” her mother, Heidi McCallum, told 1010 WINS’ Glenn Schuck. “You meet Meaghan, you love her.”

McCallum has a long history of mental illness, and while she has previously left home for hours at a time, this is unusual, her mother said.

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“It’s as if she has just dropped off the face of the planet,” Heidi McCallum said. “We are totally perplexed and totally just panicked about where she could possibly be.”

McCallum has never missed work before, but failed to show up Wednesday, relatives said. It’s also not like her to leave without her beloved dog.

“She does have bipolar. She might’ve been not herself, so we’re very, very worried,” she said. “I’m trying to find my daughter, and that’s what keeps me going. If I don’t keep doing that, I might not be in such good shape.”

Police have not been able to trace McCallum’s phone, which is off, CBS2 reported.

Her car is also missing. It’s a 1998 black four-door Subaru with New Jersey license plate N32 EAY.

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Anyone with information about McCallum’s whereabouts is asked to call police in Oakland, New Jersey, at 201-337-6171.