Witch's Marsh Will I ever see heaven again?

Ibis made a hasty mental list of what she'd seen in the marsh, what might've been useful, what might've spoiled in the water or the frost—but that didn't leave much. There were various trees growing throughout the higher sections of the marshland which kept the soil stable, allowing for some ferns and oddities to grow, sometimes mushrooms. The trees themselves might've been more valuable as the bark of the paler ones (elm was it? aspen? birch..?) could be used as a painkiller. Was that what Sarah needed? Maybe, maybe not.

The girl took a breath and said, Give me a moment. I'll go see what I can find. And with a little duck of her head, moved off to do just that. It didn't take long before she returned; it felt like twenty minutes but could've been upwards of an hour, and as she slogged back to where she could smell Sarah, she was streaked with mud. But in her muzzle she had a few thin sheets of bark clutched with care, and a sprig of some kind of plant.

These she brought to Sarah. She placed them down by her aunt—huffing and puffing a little from the exertion—and explained, If you chew on this a while it should help. I don't know the names of things, though. Do you feel warm? Like, with a fever? The bark should help clear your head, at least.