Opening scene of my screenplay

SCENE 1: EXT RESORT SKI TOWN. MAIN STREET.
TEXT ON SCREEN READS: CHRISTMAS 2011
Early afternoon on a crisp, clear, winter day. Fresh snow lines the picturesque streets filled with fancy SUVs and luxury sedans carrying skis and snowboards on roof racks. Camera pans the scene and lands on an older model Jeep Wagoneer, with fake wood panels on the side, pulling into a gas station.
On closer look, this car really stands out. License plate rim reads “Mammoth Local.” The back window and well-bumped bumper are covered in ski/snowboard company stickers. No skis on top, but car is packed with boxes, suitcases, toys, etc. Obviously, this car is leaving town. 
Driver's side door flies open and we see GRACE, wearing an old parka, ripped sweatpants, hair disheveled. The car door slams into a post in front of the gas pump.
GRACE 
(Loudly)
God damn it.
We hear giggling girls, Haven and Finder, from the back seat.
GRACE (CONT’D)
(Sotto)
Remember girls, you can only say that when you're driving.
She gets back in the car, turns it back on, and inches it forward. Opens the door, only to hit the post again, even harder this time.
GRACE (CONT’D)
(Even louder this time)
God damn it.
Girls giggle even louder.
HAVEN & FINDER (O.C.)
God damn it God damn it God damn it!
Gaggles of giggles erupt.
INT WAGONEER, back seat.
Giggling girls Haven and Finder are surrounded by duffles and tote bags, as well as a variety of books and games to keep them occupied on their forthcoming road trip.
Eight-year old Finder wears a quirky knit cap, faux fur vest and skinny jeans. She is happy, adorable, effervescent, and precocious. Her piercing, mischievous eyes are full of life. Haven, just 13, is fresh-faced and beautiful. Her skin has that Noxema-clean glow. (Though she is a real beauty, there is a sadness deep in her eyes.)
Grace moves the car forward again and finally manages to get out of the car. She grabs the gas nozzle only to find it won't reach the gas tank.
GRACE
(Under breath... cold air steams)
Fuck.
We start to see how frazzled Grace is. She suddenly notices the well-dressed, rich tourists giving her dirty looks. She smiles apologetically. She hurriedly moves car back again, as the girls bicker over a DS player. 
Grace gets out of car and swipes an ATM card...declined. Swipes credit card, same. Grace's eyes dilate and slightly moisten and hands gently shake. Close up on pump screen reads:
“SEE CASHIER INSIDE”
GRACE (CONT'D)
Fuck me hard.
Grace glares at nearby tourists, then opens the back door of the Wagoneer and sticks her head in.
GRACE (CONT'D)
I'll be right back.
FINDER
Can I come?
GRACE
No.
FINDER
Why not?
GRACE
Stay here!
FINDER
(Whines)
Pulleeezzeee...
GRACE
NO!
FINDER
(Super whiny)
Pretty pulleeeezze?
Whimpers and mocks a damsel in distress, eye-lid-flapping pout.
GRACE
(Resignedly sighs)
Alright.
HAVEN
Can I go?
GRACE
No! (hesitates) Oh, alright!
HAVEN & FINDER
(in unison)
Yay!
Girls triumphantly high-five and giggle....another battle over mom easily won.
Girls exit car head into gas station with Grace. Obviously a long-time local, many locals say hello and Grace puts on her well-worn smiling mask easily, one that she has worn many times in this small town of gossips. They enter gas station. Door jingles as it opens. 
SCENE 2: INT GAS STATION.
Grace, Finder, and Haven enter and approach the clerk, MANNY, who is behind the counter. Haven tugs on Grace’s arm.
HAVEN
Just a little snack, Mom?
GRACE
(Whispers to girls while smiling through clenched teeth)
No. We don’t have money for snacks, honey.
Grace smiles at Manny.
GRACE (CONT'D)
Oh, alright. (Hesitates) Nothing with sugar.
Girls run straight for the candy. They start up a serious conversation about which candy to get.
GRACE (CONT'D)
(to Manny)
So, uh, how's Zach? He was always one of my favorite students.
MANNY
Great, great. You know he’s down at Santa Barbara City College -- majoring in English. Following your lead, I suppose. He always asks about you -- said you were the best teacher at Mammoth High.
Manny shifts from familiarity to slightly uncomfortable.
MANNY (CONT'D)
I'm really sorry, Grace. Sorry you lost your job. Big loss for the school.
Grace, equally uncomfortable, forces a huge, plastic smile.
GRACE
You know, fucking budget cuts. (she stops herself, embarrassed) -- Sorry, I never cuss. Sorry. Besides, we kinda need a fresh start. (smiles) Anyway, can I get $60 on number five?
Grace leans towards door to check the actual pump number.


GRACE (CONT’D)
I mean four. Pump four.
She opens her wallet. $36. Beat. Stares into the wallet. 
GRACE (CONT'D)
(Still staring into her wallet)
Uh, Haven honey? Hey, you know that birthday money Grandma sent you? I think it was a hundred?
HAVEN
(still by the candy aisle)
Yeah.
GRACE
Umm, go get it for me. I'll pay you back.
Camera captures Haven, juggling her candy selection.
HAVEN
Mom, you already owe me a hundred.
GRACE
Yeah, yeah, I know. I'll pay you back.
(softening her voice)
Please, honey.
Haven gets it. Starts to head out to the car as she's been asked.
HAVEN
Okay, mom. I'll get it.
Haven exits as Grace smiles back at Manny, trying to hide her shame.