Snatch her trousers once she starts putting on the stockings

Evellyn waits patiently, chin close to ground, until the right moment to strike and acquire some more clothes. Eventually the half-elf manages to clip the garterbelt on correctly behind her back, adjusts it a little, and girates her hips for a bit while admiring the way her new acquisition looks on her; and she pulls it off very well indeed.

Evellyn watches as the half-elf then grabs the stockings and sits down on a nearby treestump, before slipping off her boots one by one. Next she starts pulling at the legs of her trousers, taking them off and tossing the garment next to her besides the treestump. Evellyn clenches her fingers, anticipatory adrenaline coursing through her... she's got a clear path to the pants. She holds her breath and waits just a few seconds more, until the half-elf begins gingerly sliding a foot into one of the stockings, fully focussed on the finnicky task.

Evellyn rushes out of her cover and covers the distance in scant seconds. The huntress is taken by complete surprise, nearly slipping off the treestump as she turns to face the onrushing threat, one leg half entangled in the dark stocking. Evellyn runs, grabbing the half-elf's pants off the forest floor and taking her boots at the same time in one swift flourish, pivoting and fleeing before the half-elf can manage to reach out and grab her, escaping like a hare bolting out of a beartrap. Evellyn hears the surprised, undignified shouts and stumbling behind her while hurrying back into the forest with her prizes.

Behind her the half-elf is left in the glade with a stinging sense of humiliation. She pulls her shirt down to cover her crotch, glancing around at imaginary onlookers while she's left alone... pantsless in lingerie.