She left her kids with her mother and never returned.
Little is known about her case.
She left her home early in the morning & disappeared.
She was reportedly working as a prostitute and the man who was allegedly her pimp has been arrested on charges unrelated to this case.
The 77-year-old woman has been missing since March 23.
Police classified her as a runaway for years.
No suspects have been publicly named.
It's been three years since she was first reported missing.
Police are asking the public for help.
She abruptly left a party after fighting with her husband.
Police state she's been diagnosed with "mania with paranoid depressive tendencies."
An arrest was made, but Monica has never been located.
She reportedly left her daughter at the home and has never been seen again.