The 6th ending: You go to the menu I click on the tape. She cuts them off, and is able to escape.
PS* Thanks for sharing the answers. I got stuck on these a few times.
for 6th for who dont get this hint at first, its the "good end", end 5 is the 5th bad end
*go to menu (backback) and examine the leg cuffs to take them off and really escape