It's taking a toll on you,you gotta think about the future economically and spending your few bucks on affording her a living in your country then I think perhaps it is time to let go. Don't fall for the "fight for your love" blue pill pressure.It means to force love and forced love is self imposed slavery.

In the future when you have enough cash you'll be able to take liberties like dating around with 2-3 girls at the same time or a meaningful stable relationship. I know from experience that spending the few bucks you have in women is not wise, better to recover,grow and then feed the cock.

If it's taking that much of a toll, you should let it go. She can come back when both of you are economically doing better. You're young. This probably will just be one of many women.

Don't break yourself to save her.

The hard truth is that when young, you should fuck a lot of women

Separate with her on good terms, maybe visit her for a year or so to fuck, until she finds someone else, while working on building your roster of future ex's to fall back on during your dry spells as an older man.

Visa issues? Like as in she has a husband and kids and didn't tell you about them?

How good is the relationship? How long would the visa issues go on -usually they do end after so long? How heavy is the toll on you?

Somewhere in there lies the right answer, somewhere at the intersection of those things.

If it really is good, it might be worth fighting through but if it is just familiar rather than good, maybe not, particularly if the costs are great.

Sorry this is a bummer. People who have never brought someone in from another land have no idea how much of a load this extra dimension to a relationship is. Its a huge burden financially to carry and in the end it puts a stress on the relationship emotionally too. Neither party feels they get much thanks for what they have given up either. Its got to be good to be worth it. Only you know if it is.

Don't marry though, just don't do that. So many girls form conservative countries come and divorce their husbands -whether their husbands are western or from their own lands. Don't be that guy, just say no.