Look at post 57 that I was posting at the same time as your post, I was picking up something about the caller also, without knowing the speculation that you just posted.
I just read more about the woman who collapsed and died as a result:
Nurse. Age 37. Four children. Engaged to be married. She was running from the store with her 9-year-old when she collapsed. Just tragic.
Two people - both gone. Although, maybe the police should’ve assessed the situation better, no matter what the 911 caller claimed.