Google translate sucks. The word “sister” in Chinese can mean both best friends(female) or biological sisters, and this is a special circumstance when the word “flower” in Chinese means beautiful instead of the plant. The translate also skipped the word Prison.For the sister part,It’s kinda hard to find out which meaning did Soundman want to express simply from his title. So a more accurate way for the title would be Beautiful Sisters’ Prison Escape or Beautiful Ladybros’ Prison Escape. I think it’s more likely to be Beautiful Ladybros’ Prison Escape due to his story.