I've watched the video and, maybe because I didn't listen closely enough, I didn't hear her hitting the ignore button.
Plus, since the credits roll in (or video ends) just after the button would be hit, we can't be sure Octy hits the "ignore" or "answer call" button.
As an unrepentent optimist, I prefer to imagine thinbgs happen for the best, and that Octavia hits the "answer call" button, but the video ends in a cliffhanger just after, so we can't hear what they say.
Besides, Vinyl can catch up with Octy after the end of the concert. Vinyl is quite the persistent one, after all.
You know, I was going to ask if you were going to fix this, but then I saw (Page 1) so I dug through the rest of your MLP art. Glad to see you turned this into a little story, and I like the fact that, so far, no pony has said a single word. Allows us to form our own ideas.
After reading Vinyl and Octavia:University Days I would think Vinyl took her binge drinking too far and did something like maybe fight with or cheat on Octavia. If you like the shipping of Vinyl and Octavia I suggest you read the story here is the link:
I think Octavia's trying not to turn around. I mean, who can't stand that heart-rending face! The moment she sees that, all mistakes Vinyl did will be soon forgotten. This will happen over and over and there will be no.... JUSTICE!!!