A 48-year-old woman from Mumbai undergoes elective laparoscopic cholecystectomy for cholelithiasis. During the procedure, the surgeon inadvertently creates a small iatrogenic perforation of the small bowel mesentery, causing bleeding into the peritoneal cavity. The patient develops a hemoperitoneum with approximately 500 mL of blood in the greater sac. Postoperatively, she remains hemodynamically stable and imaging shows the bleeding has stopped. Which anatomical property of the greater sac peritoneum explains why she did not develop acute shock despite significant intra-abdominal bleeding?