My wife and I both are originally from India and we currently live in California. I am on H1B and she is on H4. I switched my employer last year and I got a new and extended date on my I-797. Now I am working on extending my wife's visa using the Form I-539.
From my understanding, Form I-539 will extend the date on her I-94. Now, my question is that - until when would she require to get her visa stamped on her passport? Is it only if she exits US? Is she allowed to stay until the I-797 date without getting her visa stamped?