Reentry to US from Canada within 6 month

[munjheel]

My mother has 10yrs visa for US. She stayed with me for two months and went to canada to visit her friend. If she reenter in US before her I-94 expire and if she need to stay another 6 month in US, is it possible?

[knowledgeable]

Not at all ...

... please do not even attempt to misuse the system. This does not work at all and you may have bigger problems than you think.

If she goes to Canada for a few days just to visit and returns back to the US, she can continue to use the existing I94 given to her at the US POE.

You do not want to risk anything where they may not allow you mother to return to the US by cancelling her visa, if they feel you've attempted to pull a fast one.

These days they're known to conduct personal interviews in their offices just across the US/Canada border while entering the US.

Good luck to you and your mother.