The strangeness in the sand (NieR: Automata)

Strange situation: after meeting with the newborn (first playthrough easy level) machine in sand returned to the same place. Character level - 11. There is a lot of mobs 38th level. And normal and giant... B2 grapple with them almost automatically and does not receive any damage if I don't intentionally take her from the battle. Kill a bunch of robots - they run again. 15-20 minutes to pump for 3-level, typed a bunch of gold and different valuable materials. The problem is that I can't get out of there.
Has anyone encountered a similar situation? Whether it is possible to return to normal play without losing loot? Somehow get out of there?