Proserpina
Senior Member
What is a B2 visa?
Okay, let's take a deep breath
First. The B2 visa is a visitor's visa. She cannot work while on a B2, but it would give her permission to stay in the US for an extended period (usually between 6 months and a year, but can be extended after that time). Please bear in mind that a B2 visa requires the applicant to prove solid ties to her home country; it's NOT intended to be an immigrant visa although she can adjust her status once she gets here should you get married. And I'll be honest - foreign nationals from some countries will be considered "suspicious" just by virtue of their nationality. Some Eastern European countries fall into this category. This does reduce the chance of a B2 visa being approved unless she can, again, prove considerable ties to Ukraine.
Second, you can of course leave the US and emigrate elsewhere for whatever reason (or no reason whatsoever!). However if you have married and divorced her in the US, and she has already obtained a judgment, she can pursue that judgment even in Ukraine (though how successful she might be is questionable - I'm thinking "not so much").
If you leave and she chooses to stay here, she'll be able to do so provided her AOS (adjustment of status) has been adjudicated. If you leave before that happens she will run into problems.