Posted by: ny2 April 19, 2017
i-130 for b1/b2
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GC holders aren't allowed to petiton their parents, so the petitioner should definitely be a US citizen.
To the OP:
If you file i485 for your mother along with the receipt notice of i130 before her current status expires, she is legally allowed to stay in US till i485 is processed.
If she goes back to Nepal, it's highly unlikely they would allow her come back to US on visitor visa because of i130 filing and so she has to go through interview process in Nepal.
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