Yes... eventually

Through her panic, Alis managed to get a grip on the mana swirling around her. She mentally latched on and instinctively began shaping it into the beginnings of a spell, before noticing it start to take on the same sense of wrongness as the goodberry spell that got her into this mess. At the same time, the vine in her panties squirmed against her skin, brushing the delicate lips of her vulva. The sensation made her gasp out loud, as she let the failing spell fizzle out before it could make everything worse somehow. She cast her eyes around the clearing in the hope of finding an alternate solution.

Fendis had managed to chew through one of the vines, but it was quickly replaced by three more darting in to wrap around her legs and torso. Sigrid was being slowly dragged along the ground by the roots while kicking her legs and yanking on the woody stems with her hands. Her dress' skirt was being pushed up above her knees by the friction, and as it finally made it to her waist Alis could see that she wasn't wearing any underwear at all. The mage yelled in embarrassed rage, touching the gem at her neck and throwing out a hand as she tried to form a new array before the roots suddenly jerked up and apart, spreading her thighs and lifting her hips above her head.

Unfortunately her shout drew Rosa's attention, the swordswoman's eyes widening at the sight of her friend's exposed pussy and asshole. That momentary distraction allowed the tendrils to slip past her guard and coil around her arms and chest, beginning to pick the girl off the ground. She kicked and swore, rapier falling from her fingers as its grip on her strengthened.

Alis could only watch in frustration, limbs trapped and unable to use her magic. Whatever pseudo-intelligence was driving the plant monster, it seemed content to just keep its vines squirming against her skin rather than tearing off the last bit of clothing keeping her from channeling properly. She blushed at the realization that she was actually hoping to be stripped naked, though its not like being kept helpless in nothing but her panties was any less humiliating.

The vines lifted Rosa up into the air, holding her only a couple feet from Alis. She noticed that the redhead's struggling had almost completely stopped already, merely writhing in the vines' tight grip. Her eyes were glazed over and her face was looking a little flushed, lips parted slightly. Alis had to call out more than once before she finally took notice and snapped out of it.

"Rosa!, Hey, Rosa!"

Rosa blinked and shut her mouth, looking over. "Alis? What happened, what is this thing?!"

"I messed up my spell, but listen! I have a plan, I need you to-" she faltered. "I-I need you to... p-pull down my panties!"

"What?" Rosa looked down, taking in the sight of Alis' nearly-naked body with her arms and legs spread apart by the tangling vines.

Alis blushed brighter. "J-just do it, please!"

Rosa's arms were pinned to her sides, but her legs still hung free on either side of the vine that was running between her thighs to support her weight. She struggled for several seconds to kick off her boots, feet slipping out as they hit the dirt with a pair of thumps, before working to toe one of her stocking off. She lifted her bare foot up to Alis' lower body, fumbling to grip the waistband of her panties between her toes. Alis squeezed her eyes shut against the ticklish sensation, even as the vines continued to massage her breasts and groin. She felt the fabric start to inch down her thighs, shivering as her butt was exposed to the open air.

The moment the band of her panties slipped past the tip of the tendril between her legs, Alis could feel the difference in her channeling. The flow was still slightly weaker than she was used to, owing to the underwear around her thighs and the vines covering her arms and legs, but there wasn't any sign of taint in the mana she was shaping. Focusing hard, she quickly formed it into a spell her mother had taught her and sent it at the seed she could still sense belowground with a whispered "Calm!"

The vines and roots shuddered for a moment, before starting to unwind from where they were coiled around the girls. Rosa landed on her feet in a crouch as she was dropped, while Alis was briefly left suspended by the panties around her thighs before the weight caused them to rip in half. The half-elf grunted as she hit the dirt ass-first, before she scrambled to cover herself with her hands. Beside them, Fendis snapped her teeth at the retreating tendrils, while Sigrid jumped to her feet and smoothed down her skirt. Stalking towards the unmoving plant monster with a snarl, she thrust out a hand and gestured harshly. "Burn!" An array sprang into existence before her, starry lights flashing purple for a moment, then the plantoid began to twitch slightly. Its limbs blackened and cracked, an orange glow suffusing it as it was incinerated from within.

They watched it smolder in silence, Alis half-hidden behind Fendis' back as she cradled her breasts. After a moment, Rosa turned to look at Sigrid.

"So, no panties huh?"

"Shut up."