~Both of you, forget everything about having gone to the store to buy diapers now; and you won't notice these bags for the next 20 seconds.~
You say that, and make sure to get back up to Madison's room in less than 20 seconds.
~Don't notice these bags OR me for the next 45 seconds!~ you say to her, as you run over to her dresser, open the drawer for her socks and underwear, and shove one package of diapers inside. There's not enough room to shut the drawer like this, so you grab a few handfuls of her panties and collect them in the plastic bag the diaper pack came in. You then put the other bag with a diaper pack under her bed, then go back out her room and shut the door. You wait 10 seconds, then come back in again.
"Where'd you go?" Madison asks.
"I was doing a thing." You explain.
She looks at you confusedly, then just once again keeps watching the rest of a video. It finishes, and she closes the laptop and begins getting up.
"Where are you going?"
"To get something to eat."
"Okay. Wait a second first." You look at her. She's standing up now; her bladder should be relaxing now. You watch as a slight, faint dark spot appears in the center of her crotch.
"Ohp, look at that!" You point.
"Huh? What?" She looks around, until she starts to feel it. "Auh! Ack! AHHH!!!" She immediately squishes her legs together and presses her palms against her front. "MMNNNNNN!!!!" She grits her teeth and tries to stop it.
You watch as her urine leaks down to her knees.
"Why are you peeing in your pants?" You ask.
She blushes. "I don't know! I didn't mean to!" She turns around and runs to the bathroom. You follow her and block her from shutting the door.
"HEY! What are you doing?!"
"I'm just worried about you! What are you going to do in there?"
"Duh! I'm gonna clean up!" She says, glaring at you.
"What are you gonna wear, though?"
"...um..." She looks at you with pleading eyes. "Could you please give me some clothes from my dresser?"
"I'm not sure about that." You walk over and pull out the top drawer. You rip a hole in the package and pull out a small; white and fairly thick diaper. "This is probably what you need."
She looks confused and stunned.
"WHERE DID THAT COME FROM?!" She stomps the floor. "What are you trying to do?!?"
"Maddie, you just wet yourself without even realizing you had to go. This will be more sanitary and less embarrassing." You walk up to her.
"NO! I don't understand! I don't even know who you are!!"
You hear the door turn and Madison's parents and older sister come into the room.
"What's going on?" Andrew asks.