We have shadow magic, the cover of the night (if we are lucky the is fog), probably the support of our god who is trying to chum up with Kislev, a canonball sword, a forcefield cloak, an auto-revive function and we are probably more suited to interpreting and acting on available info than any other scout sent into the forest. If we are not going either some poor schmucks get sent and/or the army just blunders into the forest more or less blindly.
There are a lot more poor schmucks than there are Mathildes some of them might squeak through, if not tough I care about her not going into suicidal situations more than I do about the army of Kislev.