@Ideological & Nemisis
Both very good, and interesting, views on the matter.
Here's my point of view on this:
The reported sightings of her breaking the 4th wall haven't been very active, but she seems to be quite aware of who's watching. Due to the fact that there probably wouldn't be any mention of humans in Equestria, so she probably would've been curious at first. Due to our cultures being very different in her point of view, with the large number of young female and older male fans of the show, and many other things, she would think of us as strange. Over the time, though, she would figure out we're an intelligent and civilized culture, so she would begin to be more 'okay' with it. But, since she's, well… Pinkie Pie, she would probably want to break through the barrier into our world, to see what it's like, how we'd react, and most of all, to have some fun! Which is why these breakings would have become more obvious to us. I would also include something about her discovering our existence, but I forget exactly what happened the first time she broke the 4th wall.
Oh, and I was serious about the music thing. But I guess that doesn't matter, since I have to go soon anyways.
Also, page get! (whoop-dee-fickin'-doo)