TORONTO - The family of an Ottawa organ donation crusader says she's showing signs of stirring after undergoing a double lung transplant.

Helene Campbell's mother says her daughter is "responding to commands at times and trying to open her eyes as well."

Manon Campbell posted the update on her daughter's condition on Twitter.

The family has asked for privacy as Helene Campbell recovers from Friday's surgery at Toronto General Hospital.

The 20-year-old was propelled into the spotlight when her campaign to promote organ donation caught the attention of celebrity crooner Justin Bieber.

She later appeared by Skype on the American talk show "Ellen" and has been invited to return in person after the transplant.