Leah Remini is "shocked" at the fall-out that she's witnessed since announcing her departure from the Church of Scientology, her sister Nicole Remini-Wiskow tells Breaking Celebrity News in an exclusive interview.

And among the harsh lessons she's had to learn is the discovery of who her friends really are. "Nobody from the Church of Scientology has reached out to Leah," Nicole claims. "I can't wrap my head around what's happening."

Most shockingly, she says, is the fact that Leah's one-time friend Kirstie Alley hasn't called, deciding instead to post cryptic messages on Twitter, as Breaking Celebrity News has reported.

"Any report that Kirstie and Leah have spoken," Nicole says, "is absolutely not true. Leah is shocked it escalated to this."

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Though devastating, the experience is showing "Leah who her friends truly have been and why they've been her friends," Nicole explains. "Not because they love and care about her, but because she was a Scientologist and a celebrity. If you were really my sister's friend, you'd be calling her and going 'How are you? I know this is tough, but I really hope it works itself out.' Not Kirstie's nasty comments."