Madeline Pantoja has been missing for 9 days, here is what we know:

MIDLAND, Texas (KMID/KPEJ)- Family and friends of 21-year-old Madeline Molina Pantoja are holding on to hope as the search for the missing woman, who disappeared nine days ago, continues. Here is everything we know so far:

Pantoja, who works as a bartender at a local restaurant, went out with friends on May 10, and returned home around 11:00 p.m.; that's the last time she was seen by family and friends. Friend Jasmine Hernandez said she had plans with Pantoja on May 11, when the pair planned to spend a day relaxing by the pool inside Pantoja's apartment complex, located at 1711 West Francis.

Hernandez became worried when Pantoja didn't return her calls that day. 

"It's very unlike her to cancel plans or just not return calls," Hernandez said. The two women have been friends for more than four years, and Hernandez said Pantoja rarely went more than a couple of hours without responding. 

Location services shared between the two friends showed that Pantoja's phone was inside her home; that's what caused Hernandez to stop by, just to check in. According to the Midland Police Department and Hernandez, Pantoja's car was found in the apartment complex parking lot.

Hernandez said she knocked on Pantoja's door several times, to no avail. Growing more concerned, Hernandez called Pantoja's brother, who then joined her to continue knocking. Again, Pantoja didn't answer her door and that's when they asked a maintenance worker to let th...