She is so dreaming.

 She doesn't get any closer but does continue keeping an eye on them, in case one faction gives up on the dumpster and starts trying to get into cars. Probably Car Guy is safer than she is right now but he's asleep and someone should be keeping an eye on this nonsense. And if she's dreaming then it doesn't matter. But you can't just not be careful just because you're definitely dreaming, so she will hold very still and keep both eyes and ears out for More Weird Shit. Or her parents, though there's no way they're going to be here in the next twenty minutes.

Eventually the bugs win, although the mice manage to reduce their numbers somewhat, perhaps to the tune of the literal meaning of the word decimation. The bugs strip the mouse skeletons bare and then converge on the dumpster, making a discordant humming noise with their various different parts. 

That's kind of disgusting. Also not good news re: the bugs' likelihood of being satisfied with the contents of the dumpster.

She internally debates whether, should the bugs come her way, it will be Lightsaber Time. On the one hand, she knows what she's doing with a sword, or at least a rattan sword, and she doesn't want to be eaten by bugs. On the other hand, she doesn't know what she's doing with the lightsaber and might cut her own hand or foot off and also it's not really the best weapon option for lots of small bugs.

The bugs aren't all done with the dumpster, but some of them start to trickle off it and in her general direction. 

Backing away slowly. They are still small enough to stomp on but she doesn't want to let them get that close. She should have tucked her pants into her socks when she had the chance. If any of them look like they're coming after her in particular it's gonna be Lightsaber Time. 

A millipede longer than her boot sole scuttles towards her. 

Nope nope don't fuck with me. Whack.

Now this parking lot has a new pothole and the millipede is no longer a threat.

She really needs to not cut her own foot off with this thing. Did the millipede serve as an example pour encourager les autres?

One bug is more interested in eating its buddy's bisected corpse than her, does that count?

Yeah sure great, godspeed weird bug thing. Anybody else feeling lucky? 

Some other bugs skitter in her direction but more opportunistically than determinedly.

Dodge dodge dodge and anything that gets within three feet gets chopped. She's turning and moving to keep all the bugs in her field of view, which is letting them control the pace and direction of the fight, but she's controlling the angle and range and that's what's important right now. 

While she's doing that, a raccoon the size of a Saint Bernard tiptoes past and into the Walmart. 

Did a giant raccoon just phase through the wall--focus. Avoiding bugs. Occasionally killing bugs. If the raccoon is real it's not her problem and if she's imagining it it's not a problem she can do anything about.

Eventually the swarm more-or-less disperses. If the raccoon is real it does not immediately demonstrate this by coming back out.

If she was a ghost raccoon she'd stay in the Walmart too. What the fuck is going on. She's made a bit of a hash of this chunk of parking lot and doesn't have anything she can do about it and doesn't even feel bad, really, what else was she gonna do. She feels kind of better, actually. Less freezing. Adrenaline and physical exercise were just what she needed.

She has time to get pretty worn down again before her parents arrive. It's still cold, and she didn't sleep much on the plane, and once the adrenaline wears off she's just pacing and shivering and thinking.

She really doesn't have an explanation for any of this. It's gone on way too long to be a dream, and if she's insane it's not the kind where she can figure out what really happened just by thinking about it. If she really called her parents--and that part wasn't weird and nonsensical at all--they'll really arrive, and if they can see her silver skin and the lightsaber then it'll all be real. And--pretty cool? Apart from the giant animals, but that seems like a problem for animal control, except she appears to be convinced deep in her bones that it's her problem actually.

Why does she feel like it's her problem? Just because she first encountered them while alone? What is her brain doing. Having a lightsaber does not mean her ideal career is suddenly animal contro. The ideal tools for animal control are tranquilizer guns and stuff. She's going to graduate college and go to law school and make the world a better place that way. Maybe the superpowers will turn out to be useful enough that she should be doing something else, but that's a decision to make when she's had sleep and breakfast and isn't feeling a weird obsession with some bugs she found behind a Walmart.

Eventually her family arrives, Mom and Dad and her brother James with his long legs squashed into the back seat of the old Honda Civic. They pile out of the car, startle at her silver skin and then pull her into a giant group hug for several minutes.

"Boy am I glad to see you!"

"Thank goodness you're alright--are you alright? You're all--shiny--"

"Oh thank goodness I'm not hallucinating. Did you check the news, do you know if my plane crashed--?"

"Sis, how do you not know whether your plane crashed--"

"I'll take a look--my word. Seems that lightning storm has been giving people superpowers."

"What--Dad, lemme see--"

"You can read it out loud to the rest of us in the car, dear, it's cold and I want to go to bed."

"Okay Mom."

(In the car:)

"Do you have superpowers?"

"I do!"

"Oh my godddddd of course you have superpowers. What did you get? Can you fly?"

"I have a lightsaber! And I think I can slow down time! And maybe some other stuff? It didn't come with a manual."

"We gotta do some experiments then! And I wanna see the lightsaber. You gotta show me the lightsaber."

"Not in the car, Jack!"

"Haha you said carjack. And I didn't mean in the car."

"That joke stopped being funny when I was ten."

"Then why'd you laugh?"

"Because I'm super tired and out of it. I'd laugh at a grocery list right now. I should look at more news articOH SHIT squid godzilla!"

Three miles later there is a grizzly bear the size of a school bus sprawled out across the road.