Swelling

The wasps managed to take a chunk of HP, but nothing fatal. You give Erin a potion and watch most of the damage disappear, leaving Erin lumpy and itchy, but otherwise in good health.

Then you notice a status condition you don't recognize. You thought she might get poisoned from this, but this is a different icon. You inspect for a name and find 'mutagenic venom.'

Fucking Elves. You manage to pry the broken stinger out of Erin's navel, but that's all you can do for the girl. Out of some combination of sympathy and **** to battle with unknown transformations taking place, you decide to take a break.

"Finally, let's set up camp. The wind's blowing, the sun's setting and the sky's changing overhead."

Must you be so critical? I'm new to human needs. you pull the tent from the inventory and struggle to coordinate with Erin to set it up.

Once inside, Erin casts a few spells to make the interior warm and soft. You're indifferent to the change, but you have no reason to deny if of Erin. That's when she cast something on you.

"It's just an illusion to make you softer; I can't sleep in armor!" Erin pleads as you stow her wand back in the inventory.

You were becoming softer, more than even the leather connecting your plates. You're alarmed as you feel your chest-piece crumple onto Erin's pert tits. You'd been dusty, tarnished and weather-worn, parts of your suit have been lost, but you've never taken a dent. Look at you, you're concave! You're leggings climb her legs and hug her hips, and a sleeve crawls out of your right side, falling loosely around Erin's wrist.

Erin pivots slightly to take a look down her back, something she shouldn't be able to do. Checking, your strength doesn't seem any less, but you're looser, giving the girl more wiggle room. Fortunately, she doesn't seem to notice her increased mobility.

"What? I think you look good in flannel."

I feel like a pillow

"That's a bad thing?"

Okay, this is just one of those irreconcilable differences. Just go to sleep. You ease Erin onto the magically fluffed floor of the tent, sinking a full four inches into feathery comfort. Erin wiggles in this divot for a while before she's comfortable and sleeps, leaving you to wait for morning.

Erin tosses in her sleep. Rather, she would if you let her. In this less rigid form, you can't keep her completely stationary, but you do manage to keep her on her back at least. The touch of her body is more nuanced now. Before, she'd just squish and flatten against your metal when she jostled from unanticipated motion. Now when her body pushes into you, you stretch and conform to her shape. You expand and contract in time with her breathing. You can feel her nipples growing harder as they trace shapes on your chest. Your new sensitivity lets you even feel the pulse of her heartbeat. Below, your fabric bunches at her crotch, growing slightly moist. You've been wet before, much to your chagrin, but as armor it mostly streamed off, leaving trails and single droplets clinging to your plate. This was different; the moisture seeps into you. It's not like rusting; it's a pleasant warmth spreading across the area.

It doesn't stay so comfortable. At first, you assume all Erin's squirming has bunched you up too much, but righting that only gave temporary relief. It was like she was only exhaling half what she took in, but it somehow affected more than just her chest. All the welts from wasp stings gradually smoothed into her expanding flesh. Her ass pulls you tight against her dripping sex, and you feel something like a pebble slip out. It extends for an impressive amount of time, grinding it's way up towards the waistline and stretching you in the front as well. The same happens at her teats, growing from pinheads to the size of her thumb to the first knuckle.

This process had left her taller, curvier and drenched in sweat. She'll certainly have questions in the morning, among them a request for a bath.