My big sis would say that we've done enough in so far as disturbing the dead, and if just being here is enough to rile them up this much, it's best if we don't pursue it. Moreover...if anybody else were to come here, they probably wouldn't survive like we did.

[Or just barely without passing out, as the case is obvious for her. The encounter has been culminating into a marvelous feeling of total illness and it would be simply lovely if this place was never touched again.]