Offline/Throw Asha's bottoms toward shore
Being that you're in deeper water, Asha has to work to get to you. But while she kicks her way further into the river you figure you should be a bit sporting; if not to help her out by tossing her bottoms closer to shore then maybe to force her to run up onto the beach bottomless.
"I don't want these!" you yell. Balling them up, you throw the small bottoms as far as you can, nearly hitting the beach. Asha stops and turns, but she isn't the only one. Both of the girls are now in a race for them, but Emma starts a closer and moves a little faster as she deals with shallower water first. She scoops up the bottoms and stumbles her way into them, still trying to run away.
"Give them back!" Asha yells, but not too loudly. Her butt is out of the water now and she's very aware of that fact with one hand clasped onto her crotch. She kicks her way forward but ends up bent over, partially crouching as she finds less and less water under her.
Now wearing one half of your cousin's meager bikini, Em strikes a pose and tugs on the waistband. "I will... if you catch me!" teases Emma before skipping and jumping away all giddy and hyper.
You're already following Asha to the shore, expecting this battle to go in that direction the moment Emma scrambled. You call ahead to Asha, "You better run!" but she seems to take that less as encouragement and more that you're after her now too. So with you chasing Asha and Asha chasing Emma, you all run away from the water with your sister in the lead.
She takes the same path that the two of you followed last night, darting behind the closest cabins and making her way around to your mostly invisible cabin trail. Asha holds one hand in front and back trying to cover up while she runs. You keep a bit of distance, thinking that a larger group might be more noticeable than individual runners and also not wanting to actually catch Asha.
Emma takes off up the trail with Asha reasonably close behind. You're all halfway to your cabin when Asha starts to lose heart and turns around only to see you jogging after her. She squeals and continues up the path twice as fast. When you all arrive at the cabin Emma stands in front of the door with her arms out to block the entrance, her chest heaving.
"Give me my swimsuit!" Asha demands, out of breath herself.
"Okay, but only if you hear me out... kay?"
Asha looks back at you, then to Emma again and agrees.
"Out here there are NO rules. You hear me? No. Rules."
Aw crap.
"You know why?" she continues, stepping out of the bikini. "Cause there's no adults to tell us what to do. So the only rule is that you can't tell anyone. Not even your mom."
"Oh, okay I guess. Tell them what?"
"ANYTHING! Like, if I do this..."
Emma turns around, sharply bends forward, and fingers her butthole to both your and Asha's surprise. Then she stands back up and forces out a weak burp before yelling 'ass' at the top of her lungs.
"You can't tell anyone you just saw that ever, kay?"
Asha stares gobsmacked. She slowly turns to you beside her and you watch as a smile creeps up Asha's cheeks. She finally bursts with a giddy laugh, "This is so weird, but... okay!"
"Yay!" cheers Emma. "Come on in!" She sort of compels entry by not giving back what she stole and instead entering the cabin holding onto Asha's bikini, but you all step inside nonetheless.
"Seriously though," you stress, "you can't say anything to anyone about anything. Don't even go blabbing to people we're all out here. It's better to not have visitors."
"Wow! You're so lucky!" gushes Asha, looking around and ignoring you. "You can do whatever you want AND you have your own cabin?! I have to sleep with my mom now cause all my stuff smells like throw up."
You're really close to offering to sleep with her mom for her when Emma pipes up.
"You should sleep here! We can share my sleeping bag! We'll have SO much fun!"
"Hey, I think I just said something about not letting people know abou-"
"She knows not to tell! Right Asha?"
"Yup! I'm part of the gang now, right? Oh, um... Shit!" Asha shouts with a smile, as if such clearly heinous profanity will assure you of her loyalty.
"Gang? Oh god," You rub your neck, already contemplating just how badly this could go.
Try to convince Aunt Becky to let Asha stay one night
It's too risky for Asha to stay, keep this club (gang?) exclusive