I understand WHY you're seeing it the way you are, but I don't and won't agree with you. Statistically speaking if we look at how much time was spent talking about true love, it would be MINUSCULE to how much time was spent looking for her sister to try to fix a problem. You're right in that the movie does discuss true love, but SPOILERS (for anyone who might not have seen the movie) at the end of the movie, when she's running towards Kristoff to kiss him to save herself, does she? No. It's basically the movie saying, "this is how we fix this, but this isn't what this movie is about" and instead she goes to save her sister. There's talk of true love in the movie but that's not the main focus, at all. That'd be like me saying the plot of Iron Man 3 is Tony Stark feeling upset about what happened in the Avengers. It might be a side note but by far it is NOT the main plot.