NM.
She is from Israel so most likely it is her name. She has used it since 2004 when she won miss Israel.
It's a common Israeli name. Means "wave" in Hebrew.
What is NM? I see it a lot. Before I always thought it was short for "nevermind".
Newton-metre
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No.
No because Boy George’s real first name is George so that would make Gal’s first name Gadot. Which seems wrong.