CHICAGO (CBS) — The family of a missing Joliet woman is searching for answers.

Deborah Barr describes how she felt the day after her daughter, Linda Fellenbaum, disappeared.

Barr got a call from Linda’s cell phone and it wasn’t Linda.

She said she was “absolutely panicked.”

Barr said she could not reveal what was said on the call because it could compromise the investigation.

The 32-year-old mother of three has been missing since she left her boyfriend’s house on Oct. 21.

What Barr can say is that her daughter’s disappearance is unsettling for an area that has dealt with the cases of two other missing mothers, Lisa Stebic of Plainfield and Stacy Peterson of Bolingbrook.

“I am seeing a very disturbing pattern with that,” Barr said. “I would encourage everyone to just be very careful.”

Last weekend, Barr and volunteers joined police in searching for clues in Joliet and Romeoville.

Fellenbaum is the mother of three children, ages 2 through 10.

LISTEN: WBBM Newsradio’s Michelle Fiore Reports