(Erotica) Don't Go!!!! (Cg/L, Diapers, Messing)

Looking out the window, the sky is an inky brown color. Even though I'm technically an adult, my childish brain still wonders why it's not the regular bluish black that it normally is. I had asked you shortly after the sun set, and you said that it's because the pretty white snow on the ground reflects the moonlight and makes the sky a little brighter. I didn't know what a few of those words meant, but it made me feel a little better knowing that you know all the answers to everything!
It's been really snowy recently. So snowy, in fact, that neither of us have been able to leave the house. The roads were plowed a little earlier in the day, so we're technically free to roam now, but there hasn't been a reason to go out yet. Yet.
We're cuddling on the couch, and of course, I'm in nothing but a pullup and one of your big sweaters. I've been a good girl recently and just graduated to pullups from diapers yesterday. I've only had once accident so far today, and I made it to the potty all the other times!! We're both laying down on our sides facing the television, and you're holding me from behind. Your hand is casually resting near my cheek, and I've been suckling away on your thumb for this entire episode of the show we're watching.
Very quietly, you whisper in my ear "hey little miss, I think I'm going to take a super quick trip to the store to get a few things. We're almost out of food and baby formula for your little tummy, so it's high time we get some fresh food!"
I take your thumb out of my mouth and whine "but y/n!!! I don wan you to gooo!!!" I'm so comfy in your arms, and I don't want you to leave me at the house all by myself!!
"But honey bunny, I have to get us some things. It'll only take a few minutes, I promise" you say. I whine and huff in protest as you get up to put your snow gear on. We already have enough food to last until tomorrow!!! Before you go, you pick me up and put me on the floor next to my coloring supplies. "Why don't you color me a picture while I'm gone?" you ask me softly.
As you go to the other room, I feel my little tummy rumble and feel a little tight. Suddenly, I get an idea. While you're gone, I get on all fours and push my booty into the air so it's exposed and pointed right at the door you're going to come out of. When I hear your footsteps coming a little closer, I start to push.
Right as you come out, a sudden rush of warm mush explodes out of my booty and into the soft seat of my pullup. With a loud crackle, the white and pink exterior bulges out and turns a dark shade of brown. My cheeks flush and turn red as I continue to push out my mess. Just when I think I'm done, a sudden big explosion of mess very audibly comes out and pushes my pullup out to the maximum it can possibly stretch. I only noticed it a little, but when I was pushing, I also wet my pants just a little bit. I wiggle my messy bottom in your direction a little bit, and I can feel that the mess is about the size of a softball.
"Honey...." you say softly. "Did you have an accident?" I'm quickly snapped out of my trance and turn myself around to face you. "No..." I say as I quickly put my legs under myself and sit back down on top of my mess. As I sit, there's an audible squelch as I squish my poor pullup on the floor. Before you can continue, I quickly open my legs and start to fully wet myself. You stare at me without saying as a word as the hiss of me being a little potty pants fills the room. You can see the white front of my training panties turn a yellow and then darken as the liquid reaches the big and bulging mess at the seat of my pants. A small amount of potty leaks from the leak guards and makes a small puddle on the floor next to my legs. Now instead of leaving, you have to change me!!
You're smarter than my simple little mind thinks you are. You grin as you come over to me. "So you weren't just a little potty pants just now?" You ask me sweetly. "Nope!!" I say happily. "Alright! Good girl!! I trust you not to have any accidents while I'm gone then too!"
My excitement suddenly dissipates as I realize you caught on to my plan. "But y/n, aren't you going to check me to make sure??!!" You come over and pat my messy little booty and give it a little squish. I make a little squeal of excitement as I feel the wet padding graze across my kitty. "Looks good to me, honey" you tell me. "Unless there's something you'd like to tell me?"
Uh oh.

To Be Continued!!!
You get to choose the next part!! Do I
A. Fess up and get punished (with an extra accident!!)
B. Get left in my wet and messy diaper and have another accident while you're gone
C. Other (comment or dm me)