That is a really achy story. It was well written, but I felt the tension between the two was one-sided. Really, Photo Finish just sounded like she was blowing Pinkie off. That's actually a good thing, since it makes it seem like a real conflict and not a perfect "the protagonist must be faced with something" kind of conflict.
Still, it sucks for Pinkie Pie that things went down the way they did. But what are ya gonna do?