Do you all think this is the right approach?

I'm virgo 27 she's pisces 27

I was dating 4 girls and the one I had the most interest in and spent the most time with asked me to be exclusive last week. I was happy to hear it, so I stopped texting the other 3 girls since then.

She clearly has the highest interest out of all of them, which is why she pursued exclusivity. But recently during our usual texting, she casually mentioned that once she finishes grad school she plans to move out of her parents’ place and not necessarily to my city.

That caught me off guard. On top of that, she currently lives outside of my city already(just 30 mins drive to my place and I'm okay with it) , so it’s not like she’s even local right now. It makes me wonder why she even asked for exclusivity if she’s not planning to plant roots here. I am okay if it's like an hour or 2 driving distance and I love my independence and I want the same for her because that builds autonomy and growth but if she plans to move out of state or somewhere else where this becomes long distance should I even stay exclusive at this point. I'm planning to ask what places she has in mind for a potential move and if it's something LD I am thinking of telling her to let's not be exclusive. What do you all think about this? Also is this like one of the pisces trait?