When all else failed, an ailing Texas teen turned to Siri for help as Hurricane Harvey flooded her home.

Tyler Frank, 14, who suffers from the genetic disorder sickle-cell anemia, was in excruciating pain as the storm swept through Houston, CNN reported.

Her calls to 911 went unanswered, her pleas on Facebook fell on deaf ears and her efforts to reach someone on Instagram also failed.

“I was like, ‘Siri’s smart enough! Let me ask her!’” Tyler told the network.

“Siri, call the Coast Guard,” she told Apple’s personal assistant as her red blood cells clogged up her blood vessels, preventing oxygen from reaching parts of her body.

The pain of a sickle-cell emergency can be worse than that experienced during childbirth, according to the National Institutes of Health.

Tyler suffered from trauma and exposure to cold, both of which are known to trigger a medical crisis, Dr. Titilope Fasipe, her hematologist at Texas Children’s Hospital, told CNN.

During the Aug. 27 deluge, Tyler’s oldest brother, Joseph, 18, carried her on his back to the roof while her next-oldest brother, Brayland, 16, carried their youngest brother, Jaquarus, 8.

She gave her location to the Coast Guard and said she feared for her life. The man at the other end of the line told Tyler she was a brave “guy.”

“I was like, ‘I’m a girl!’ And he was like, ‘Oh, you’re one brave girl.’ And I was like, ‘Thank you!’ ” she said.

When a Coast Guard chopper finally arrived, Tyler’s mom, Tameko Frank, recorded the scene and posted the video on Facebook.

She told a crew member that her daughter had a 103-degree fever and needed to be evacuated. But the rescuer told her they were only taking elderly people.

“She was standing right there in front of him. And he turned around and got on the helicopter and left,” Frank said.

Tyler said she felt abandoned.

“Why did they leave when we really need them?” she said. “It made me cry.”

The Coast Guard told CNN in a statement that its “first responders were faced with an overwhelming request for assistance due to Hurricane Harvey.

“On-scene rescue crews made determinations based upon emergent factors (i.e. immediate, life-threatening situations) and the conditions faced on the scene.”

The ninth-grader persisted, though, calling the Coast Guard again, and was rescued by another helicopter the next day.

After being seen by doctors in Pasadena, Texas, she was sent to Memorial Hermann hospital in Houston and then to Texas Children’s Hospital.

Fasipe marveled at the perseverance shown by his patient, who had her spleen removed at age 3 and has undergone six blood transfusions — the first when she was only 6 months old.

“She’s got this great sense of humor. She just made us laugh,” Fasipe said. “It’s so impressive what she and her family dealt with. I don’t think most of us can even imagine.”