"I am shocked and saddened by reports that Camille was in an abusive relationship," Armstrong told E! News exclusively.
"It takes a tremendous amount of courage to take a stand and report abuse. Camille made the right choice and I am proud of my friend," she added. "She has my love and support during this challenging time with both her health and her personal life."
Earlier this week, the former reality star was granted a restraining order against her ex-boyfriend Dimitri Charalambopoulos after she claimed that he beat her in a Houston hotel room.
Camille, who was recovering from cancer surgery just days prior, explained in the court documents that Dimitri grabbed her by her hair, smashed her face and pulled out clumps of hair during the physical altercation.
Her account of the incident said: "He wrestled me on the hotel bed, repeatedly slamming my head and face into the furniture, and eventually he succeeded in immobilizing me…I began to scream, calling for help."
Camille's statement added that Dimitri then "squeezed my nose between his finger and pushed upward forcefully, covering my mouth in an attempt to silence me to prevent me from breathing."
A judge granted then a temporary restraining order against Dimitri—ordering him to stay 100 yards away from the 45-year-old and her two children.
At the time, her rep released the following statement to E! News:
"We believe the declaration and the court's decision speak for themselves and at this time neither Ms. Grammer, her attorney or her publicist will have further comment."
Armstrong is no stranger to speaking out about domestic abuse issues.
She has publicly spoken about how the limelight may have saved her life after her marriage to late husband Russell Armstrong.
"I was in an abusive relationship for six years and that was going on...The only thing I would say, if the cameras were not in my life, I might not be sitting here today," Taylor said when asked during an interview with KTLA-TV whether the Bravo cameras amped up and spotlighted the drama in her life in a destructive way.
"A lot of domestic violence situations end in murder-suicide, versus just suicide. I have my daughter with me today, and by the grace of god and, perhaps, reality TV, I'm sitting here and so is she."