Echo backs up to where the others are working, and despite having been spotted by the host's defenses, decides to try to grab something useful before she's forced to flee. The building should have a fire escape plan, most likely publically available, unprotected data. It wouldn't label the rooms but it would give a floorplan. Something they could use to find a chokepoint, or other defensible location, perhaps...
(OOC - Computers roll? Or will that need hacking? Reading a little, it seems like the file would be something Echo could recognize immediately, unless it was Hidden, then would use Computer+Intuition to access, again unless there was some encryption or security protecting it. During the turn she was doing that, the host would be able to take action against her however.)