Karoline Leavitt can call herself whatever she wants, but it doesn't mean she's acting like a righteous woman ... so says the mother of her nephew and godson, who was detained last month.

Bruna Caroline Ferreira appeared on Erin Burnett 's CNN show Friday ... and, she laid into the White House press secretary -- telling Erin she'd want to tell Karoline, "Just because you went to a Catholic school doesn't make you a good Catholic." Facebook / Bruna Ferreira

She added, "You are a mother now. How would you feel if you were ... in my shoes?" Karoline and her husband, Nicholas Riccio , welcomed their first child together in July 2024.

Ferreira also notes she and Michael Leavitt -- Karoline's brother -- chose KL to be her son's godmother instead of her own sister ... almost certai

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