Shay, who has been a close friend of Madix since before the show, has been supporting her on social media and her podcast.
She posted a photo of the pair on Instagram, writing, "Always got your back," with the hashtag #TeamAriana on March 5.
On March 9, she also posted a photo of almost the entire female cast captioned, "We ride for Ariana."
During the March 10 episode of her podcast, "Scheananigans," Shay spoke with current castmate Lala Kent and former castmate Kristen Doute about the scandal.
"I think everyone is going to watch [this season] with different eyes," Shay said.
In a court filing, Leviss accused Shay of pushing her against a brick wall and punching her in the face on March 2 after Shay found out about the affair, E! News reported. Leviss obtained a temporary restraining order against Shay and claimed she had been "physically assaulted" on Instagram.
Shay's legal team responded to the accusations in a statement to Insider.
"This case is a fabrication by a known liar and a cheat who has betrayed everyone close to her. Scheana never punched [Leviss], period. The supposed dark markings around her left eye have been there for months," Shay's attorney Neama Rahmani said.
"Neither Scheana nor other cast members want anything to do with [Leviss] going forward. The judge has only heard a one-sided account of what happened, and we look forward to presenting the full and true story at the March 29 hearing."