After returning home from her ill-fated meeting with Kelsey Grammer last summer, Real Housewives of Beverly Hills star Camille Grammer says she "felt sick to my stomach" after the Frasier star, 55, abruptly ended their 13-year marriage.

"When we got back from the Tonys, he laid down next to me and he put his arm around me," she tells her friend D.D. while fighting back tears. "He snuck out as soon as I went to sleep."

(At the time of filming, Camille, 42, did not yet know the identity of Kelsey's mistress, British flight attendant Kayte Walsh.)

"Who is this woman?" she asks. "Does she not know that she's destroying a family? She's destroying my children. They're going to be just devastated without their dad."

The Real Housewives of Beverly Hills airs Thursday at 9 p.m. (EST) on Bravo.