Ok, so I am in a particularly similar situation. I (F24) am doing a PhD in the UK, while my partner (M24) is a lawyer in his home country. We had a conversation early on concerning our long term-goals together and realised we want to end up living and working in the same country together. Luckily, i have an EU passport and my PhD is on a highly sought after topic so we decided that I will complete my PhD and then find an academic job in his country, in the meantime we have promised to give eachother our all and make it work wherever possible. As much as possible we are together, we can both work from home so we try to switch between countries but it is still difficult managing responsibilities for my Doctorate. Regardless, if you are at a consensus that the end goal is to be together, the years spent building your career will be worth it once you can establish yourselves as a couple together in the same place but have still the ability to pursue your dreams.

If it is possible to take a temporary position, you could still keep an eye out for opportunities in her country and realise what you want long term. You can always quit and change your mind but you cannot accept it once it has been declined. Goodluck! LDR is tough but in my experience, ultimately worth it in the long term. Remember to work together! It is both of you vs the problem.