Mira stumbles slightly "Ada, could you maybe NOT lean to the left while I'm walking?"
Mira rolls her eyes "I'm literally sitting on your head, I need to adjust. Do you want me to get a cramp up here?"
They both sigh simultaneously
"Welcome to our life," Ada says from above. "She's my sister, my chair, and my transportation all in one."
"Don't forget your punching bag," Mira adds dryly. "What do you want? We've got about ten minutes before she needs a bathroom break and I have to carry us both to the nearest stall."