The 'Grey's Anatomy' star is playing adoptive mother Kristine Barnett in the dark new series about Natalia Grace, 'Good American Family', premiering March 19 on Hulu
"Any accounts pretending to be me or anyone associated with me are fake accounts and have been created for financial gain or to exploit," the actress says
"All week, I was just pinching myself that we were getting to work together," Rauch tells PEOPLE while Bialik, who plays a heightened version of herself, teases that the Jan. 14 episode includes an "elaborate twist"