So this has quickly turned into a problem for you. Having a Giant by your side was nice when you were relatively a fair size to her. She still towered over you, but it was to a degree where you could handle.
Now, after shrinking through the night... you were a mere bug, not a human... but a GIANT! That sneeze shook you around, making you grip onto her suit in a panic.
On her shoulder, which suddenly had a lot more room for you to fit she was organizing her morning food.
"I'M THINKING." She spoke. Diane's voice was loud before, but now it was commanding and it got your attention instantly. "WE SHOULD DROP ALL OUR PLANS AND TRY TO HELP YOU WITH YOUR SIZE. FIND A WAY TO GROW YOU IN SIZE," She looked to her shoulder, her brunette pigtails almost knocking you off her shoulder with a sweep, something she didn't think about and failed to notice. Diane frowned at the little speck on her shoulder.
It's going to be hard to look after you, but she does truly care about you. The giant knows how to handle tiny ones, she will do her best to take care of you.
"That's a great idea!" You shout into her ear. "I'm pretty much going to be staying on your body from this point on if that's okay, on the ground I could easily get lost!"
"I DON'T WANT TO STEP ON YOU EITHER." Diane chuckled. "WELL I GUESS MY BODY IS FREELY YOURS TO STAY ON, LIKE A LITTLE FLEA." You don't appreciate the comparison, but at the very least she was going to care for you, and she was okay with you staying on her large body. Her ear or her hair was your plan to stay for the time being.
After Diane finished making the food, she started to eat. The giant wasn't the kind of girl to eat politely in front of a person, and you could tell. She really was eating it with scoops.
You look down at all the small berries on her hand, while she shovels it into her mouth. They were about your size, and you were shuddering at the thought of you falling down into the food and getting brought to her mouth. You can ask Diane to be careful all you want, but the responsibility also falls onto you. You need to make sure you are never on a stupid point on her body, where something bad could happen.
And then... it started to happen. While she ate her food, her body was leaning forward and slightly moving. Not even something that Diane would notice, an idle movement.
For you, you felt the sway... and you fell because of it. Suddenly you lost your footing, and while you flailed your arms... you couldn't do anything to save yourself! You have already made the mistake.
Quickly gazing at the gigantic plain that was her face she wasn't watching. You were now falling straight down, going down the long trunk that was her neck.
"Diane!!!!!" You shout whilst you fall, but you got not reaction. You had to be right next to her ear for her to faintly hear you, and even the small distance away from her ear that you were now was enough to make you silent.
Meaning you were falling down straight into the food, and your fear was about to become reality! Only... you didn't fall forward enough to be on a crash course with her food.
No, you were on a crash course with her giant breasts. Something you noticed when you fell and... calmed down. At least you will still be on your body, and at least you are going to have a soft landing!
You drop down her torso with her breasts creeping closer and closer. Freefalling with no control over your body. The sound of Diane eating being the background noise for you while you prepare for the landing.
You got close, bracing yourself for an impact. You hope it was bouncy, but at your size it was impossible to tell!
You finally collided with her Giant Cup breasts, and bounced up! Yes, her breasts were still soft and perfect to you!
You got some air due to the fall, before falling back down onto the breasts. This repeated for a while, until the momentum was gone, and you were stranded on her tit.
You look at the face of the mountain over you, eating and entirely unaware of the fall that you just had. Her face seemed so distant now, like the top of a mountain you couldn't dream of reaching.
And her breasts! At your previous size, they were big enough to firmly secure you. Now... they were like it's own terrain. A biome that you could explore and live in.
She is a giant after all, but this was absurd. Shaking the thoughts out of your head, you just sit down and relax. Feeling the sway of her body and waiting for her reaction. Not much else you can do, besides trek over the boobs but staying where you are probably is the smartest option. Don't want to fall even further.
After finishing her food, she chuckled. "I KNOW THAT RAISEN WAS PROBABLY ENOUGH FOR YOU, BUT I HAVE A HALF-EATEN GRAPE THAT WOULD PROBABLY TASTE PRETTY GOOD AND... HEY, WHERE ARE YOU?" You watch the giant above finally notice that you weren't on her shoulder, and her reaction told it all. "ARE YOU STILL THERE? YOU ARE SO ITTY AND BITTY THAT I CAN'T REALLY SEE YOU?" She closed one eye trying to spot you, but there was nothing there!
Instead you were on her breasts, and you were jumping up and down. Waving your arms in a frantic manner. It's not going to be likely, but the off chance she searches her breasts for you, you feel like you are making enough movement to catch her giant eye.
What happens next?