Audrey Age 85, Good Health And Active. Drives, Goes Out

Audrey age 85, good health and active. Drives, goes out to lunch and plays cards with friends weekly. Goes to church every day and occasionally to the casino.
Hx of hypertension, and a Laproscopic Colon Resection -10 years ago. Removed 12" of colon. Has urgency w/bm's usually diarrhea. Arthritis: knees and neck.
Meds: daily toprol, knee inj every 3 months, Aleve prn.
Chief Complaint: November 2015- Passed out at lunch with friends while eating lunch. Went to ER via ambulance. Blood work normal. EKG normal. Holler monitor x24 hours- negative
February 5, 2016. In Church with daughter in law, she states Audrey extended her left arm , as she turned pale, lost all color, and diaphoretic, visual disturbances occurred, described as " everything got fuzzy". They escorted Audrey out of Mass to the back of the Church, a doctor, came to assess her and noted faint pulse hard to detect and suggested an ambulance and Audrey refused. Audrey had a bm and her color improved and symptoms resolved, she went out to breakfast and shopping after the incident. Evaluated by her family Dr today, a cardiology consult arranged. Holter monitor X 1 month
My question to you- I think this is colon related not cardiac. Is it possible the urgency and frequency of BMs and gas associated caused a vagal response.??
Thank you