So ever since Lyra found out that Bon Bon used to be in the EQBPRD, she’s been really interested in that part of her friend’s life. Bon Bon told Lyra all kinds of stories about monster hunting and capturing and stuff and Lyra was totally enthralled by it and Bon Bon loved telling her those stories, though it was technically breaking laws of secrecy. When the organization started to reform, Bon Bon made it retroactively okay by reenlisting on the condition that her partner, Lyra, be her “civilian liaison attache.” Lyra got her own official special EQBRPD sunglasses and security clearance, and spent all day watching for monster attacks on their part of Equestria.
 
One afternoon, Bon Bon gets an alert that a Code Sunset Black has been called in downtown Ponyville and she scrambles to enact containment and lock-down protocols, disabling the train and preventing anypony from getting in or out of town and breaching the quarantine. Bon Bon goes to Sugarcube Corner and finds that Lyra has all the employees face down on the ground, hooves zip-tied together, and Lyra is one by one putting muffin from the counter into evidence bags.
 
Bon Bon, wearing her enchanted Persuasion Shades, comes in and assures the onlookers that “everything is under control” and “disperse and go home” before asking Lyra under her breath where the dimensional rupture is. A Code Sunset Black doesn’t get called unless there’s a catastrophic spatio-chrono tear and Bon Bon sure doesn’t see any mi-go hiding behind the counter. Lyra tells Bon Bon that she was waiting in line for muffins because the mare back in the kitchen made up some new, totally delicious-looking super-special banana-oatmeal-walnut stuff which sounds gross but isn’t really, I mean probably, but Lyra wasn’t going to be able to even try them because she was all the way at the back of the line and the other ponies were definitely going to buy up all the new muffins before Lyra got a chance, so Lyra pulled her badge and made everypony get down on the floor, official business, so that she could get some of them muffins.
 
Bon Bon almost has a heart attack on the spot, unbelieving that Lyra would abuse her power so flagrantly (and all only for muffins!) but she manages to keep cool in front of the civilians. Bon Bon breaks out in a sweat, because she has to decide whether to turn in Lyra or sweep this thing under the rug and risk Lyra abusing her power again in the future.
 
 
Meanwhile, Vinyl Scratch’s subscribers have been dropping her channels recently, and less money is coming in to the Scratch-Melody household. Octavia tells Vinyl not to worry because she makes more than enough from the symphony and her side-gigs to support them both, but Vinyl secretly feels afraid like she’s just getting old and eventually she’s going to be totally left at the wayside of popular culture and turn into the has-been she’s always promised to herself she’d never become.
 
But Vinyl pushes this all away, down inside. This is the week of Octavia’s birthday, and Vinyl had had a DJing gig scheduled for today, but it got canceled for lack of interest. Vinyl doesn’t tell Octavia this because she is embarrassed, and instead decides to spend all day making an awesome birthday for Octy.
 
Vinyl knows Octavia will love best a quiet little afternoon together with her as a celebration- not a big party- so Vinyl works to keep things simple, which is not easy for Vinyl. Vinyl is kind of lame so she read an article “how to make your special pony feel special (on a budget)” in order to make a date for her and Octavia and the article said to combine the two things you both love into one special thing you can share.
 
Vinyl loves banana-walnut muffins and Octavia loves oatmeal-raisin. Vinyl scraped together a few of her remaining bits and, instead of getting her signature shades repaired (she accidentally broke them,) commissioned Pinkie Pie to invent an awesome new muffin combining the two, both banana and oatmeal flavors, and Vinyl would come by and pick up a half dozen of them and surprise Octavia with the delicious baked goods that afternoon.
 
But when Vinyl gets to Sugarcube Corner, the building is blocked off with police tape and there’s a mare wearing somehow really intimidating sunglasses who tells her to “go away” and, even though Vinyl can see right there through the window a mint-green unicorn putting Octavia’s special muffins one by one into plastic bags, Vinyl’s hooves betray her and her body automatically turns and starts walking away, just like magic.
 
Now Vinyl has no money, no plan, and Octavia’s birthday is going to go horribly and Vinyl has no idea what to do for her special somepony and when did her life get so turned around, this isn’t who or where she wanted to be in her mid-twenties, how stupid and pathetic can she be that she can’t even get a few muffins for her girl on her special day, and it’s just all too much and she starts to cry.

Why is Vinyl mad?

Context?