An unnamed friend of missing YouTuber Gabby Petito says the New York native uncharacteristically blew her off prior to being reported missing. Petito, 22, was supposed to meet with her friend in Yellowstone National Park after her pal’s birthday on Aug. 29 but never messaged her, The Sun reported.

After not calling her friend on her birthday, Petito sent a text to her mother, Nicole Schmidt, the following day saying that she did not have service in Yosemite -- 800 miles from her last know location at Grand Teton National Park in Wyoming. The friend remains confused as to why Petito would text her mother instead of her.

Schmidt has said she doesn't know if the text actually came from her daughter.

The friend also said she does not think the text came from Petito and believes that she would have called "as soon as she had service." Speaking on the situation, the missing person's friend says she feels “the whole thing is odd.” 

The friend has not yet spoken with the police.

Petito and her boyfriend, Brian Laundrie, were on a cross-country trip before she went missing. Petito was last seen on Aug. 25 and Laundrie returned home to Florida in Petito’s 2012 Ford Transit on Sept. 1. Petito was reported missing on Sept. 11 and Laundrie has been named a person of interest in the case. He has refused to cooperate with the police. Petito's mother also claims Laundrie and his family have not been in contact with her. 

READ: Gabby Petito’s Mom Repeatedly Slams Ex-Fiance For Mysterious Behavior

Prior to Petito's disappearance, the couple had an altercation on Aug. 12 that was captured on a police body camera. The police pulled the couple over for speeding and hitting the curb. The video shows Petito speaking with an officer separately and saying the couple had been fighting over “some personal issues.” Police later wrote up the incident as a “mental/emotional health break.”

Nearly one week after her friend was reported missing, the source says Petito's disappearance is “heartbreaking.” She described Petito as a “happy person” and says she hopes the truth will come out soon.

"She wouldn’t wander off and not contact her family. I know that for a fact," the pal told The Sun. "She wouldn't blow me off either. She's my person. And I can't stop thinking about how scared she must be."