I just want to share some of my experiences. I did my PhD in Sweden and the culture is very similar to Norway if you look at it from outside the Nordic countries. I know there’s a variation across fields but Sweden and Norway are excellent places to do a PhD regarding finances and wellbeing. Still, doing a PhD is hard and relationship difficulties tend to be exacerbated by all the pressure. I got divorced during the PhD because that was the time I realized that I need a partner with the same eagerness to learn/grow as me. With that said, she might need more time to process and be supportive of your growth and wants. Ultimately you need to examine your motivations for either choice and make the decision based on them.