EDMONTON - A young Alberta woman who got a visit with pop star Justin Bieber last year has died.

The family of 19-year-old Crystal Montgomery announced her death on Facebook.

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A campaign on Twitter last fall convinced Bieber to see the sick woman.

He quietly visited Montgomery at Edmonton's Cross Cancer Clinic before heading to his sold-out concert at Rexall Place.

He then tweeted a photo of them both smiling from her hospital room.

Montgomery's mother, Rita, says on Facebook that her beautiful girl is now free of pain.

"We will forever love her and never forget her," she said Thursday. "Crystal, you are going to be the most happiest angel."

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  • concert time #bieberforcrysal #bieberforcrysal #bieberforcrysal @justinbieber you made her dream come true! pic.twitter.com/wy1xbmsP

  • CRYSTAL GET READY!!! HE'S COMING :) #bieberforcrystal

  • Crystals first reaction #bieberforcrystal @justinbieber #wedidit