I mean, you and your college crush, who was also crushing on you, met up in the middle of a war zone. She left five minutes after graduation and didn't even leave a note. Why would you instantly reconnect emotionally and admit your feelings at that point? There's hurt to resolve.
But if there was a relationship that, for reasons, had to hold to the bare minimums (darn religious kids and religious orders and asshole priests), and you knew about that reason? The hurt would be there, but probably easier to forgive.
I love these two weird-ass girls. They both go through so much pain and suffering and when they find each other again, it's... not an immediate healing, especially with some stuff that happens later, but it's going to be very good when they finally get through it.