How do I get the woman in the lower left corner up of that hole?

As far as I know, I cannot use any of the wooden crates, because they are needed in order to get the injured person down to the elevator.

Copied from gamefaqs guide by peter the h,
http://www.gamefaqs.com/portable/psp/file/929800/43779

S05-10: Stage 05-10
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Go right, climb onto the box, jump right, and pick up the fire extinguisher
Drop down the steps to the right, and push the box over the edge
Jump right, onto the safe, go right, drop to the floor, right,
  and extinguish the fire
Go right, activate the adult companion (Alice Miller), turn left,
  and pick up the fire extinguisher
Go left, climb onto the safe, jump left, and drop onto the box
Extinguish the fire (most of it, anyway), turn right, drop to the floor,
  turn left, and push the box once
Climb onto the box, jump over the fire, and activate the young companion
  (Emma Starling)
Turn right, pick up the fire extinguisher, go right, and extinguish the fire
Go right, push the box once, and instruct Alice to push the safe once
Climb onto the box, over the safe, and go right, into the elevator
Once Emma is over the safe, instruct Alice to push it once
Once Emma is in the elevator, go up two floors, and instruct her to
  stand on the switch to the right
Once Emma has left the elevator, go down one floor, and instruct her to stand
  at the bottom of the ladder to the right
Go left, push the box over the edge, drop down onto it, and instruct Alice
  to step to the right
Step off the box, turn right, and push it over the edge
Jump/climb to the floor above, go right, into the elevator, and down one floor
Instruct Alice to get into the elevator, go up two floors, and instruct her
  to stand on the switch to the right
Go right, pick up the fire extinguisher, and instruct Emma to stand on the
  switch to her left
Go left, over the wall, left onto the switch, left, and hang from the edge
Drop down to the floor, go right, push the box into the fire, then extinguish it
Go left, pick up the patient (Erik Sachs), go right, down the steps to the safe
Drop Erik, jump/climb to the floor above, go right, jump the gap,
  and climb onto the floor
Go right, climb the wall, and instruct Emma to stand next to the lift shaft
Drop to the floor, go right, up the ladder, left, and into the elevator
Go down to the bottom floor, left, up the steps, and pick up Erik
Turn right, go down the steps, into the elevator, up one floor,
  and instruct Emma to get in
Go up one floor, and instruct Emma to stand on the switch to the left
Go up one floor, left, drop Erik, and instruct Emma to stand at the bottom
  of the stairs to her left
Go right, into the elevator, down one floor, instruct Alice to get into the
  elevator, and Emma to stand on the switch on the top floor to her right
Go up, instruct Alice to pick up Erik, go left,
  and stand on the left edge of the switch
Instruct your companions to follow you, wait until Alice is under the shutter,
  then go left, and wait for your companions to exit
Exit

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i need to go to the bathroom ~ me, many times