Myrkr unsettles her.
She's not sure she believes the stories about it, but the way those work is that nine of them are bullshit and the tenth is life or death.
The things that have tried to kill them so far haven't succeeded, which is good because specifically she needs to murder Luke Skywalker later.
Scanners can't penetrate the trees here, traces of some weird kind of rare metal in the wood, but she's pretty sure they'll make it out before they starve.
A few days' hard march, probably, and then she kills him shut up.
She's not very easy to frighten, considering who she used to work for, but still.
It feels like anything could come out of those trees.