<human>: Can you succinctly summarize the text in 1-3 sentences?

I'll try to keep this vague. I'm sorry if it's rambling. We're both American students studying in a South American country (me - 26M, her 25F). We're from two different states and only got together after arriving here a few months ago.

Things went downhill pretty fast. I can't even really put my finger on why. We fight about trivial things, and it always seems to explode into these horrible fights that linger for days. It usually seems to come back to shit communication, but even though we acknowledge this, we're never able to properly address any of the root concerns during a fight. It's becoming clear to me that this relationship isn't working. I hate how much energy and time we spend being angry and stressed. We're cold and aloof to one another more often than not. We've only been dating for a few months, but it feels like the honeymoon period died a long time ago and neither of us know how, nor really want to fix it.

A few months back, we booked a month-long trip to a few other countries in the area instead of going home for Christmas. In hindsight, I realize this was a poor decision, but we were both hoping things would get better beforehand. This hasn't been the case - we've been fighting like crazy for the past two days with no signs of letting up. We're leaving for our trip in a few days, so unfortunately there's no time to refund or exchange tickets.

I'm not sure what to do here. I'm upset that I won't be spending my Christmas with my family, and will instead be traveling with my girlfriend with whom I fight a lot. While I have enough money to book a flight home, she doesn't, and I can't just break things off and abandon her here for the holidays. 

Has anybody been in a similar situation? Any advice?
<bot>: I think I need to break up with my girlfriend, but we're leaving for a month on a trip. No time to refund or exchange tickets.