"I read it was caused by all the toxic products she’s used on her hair over the years? Could be wrong though, although she does still have her eyebrows."
There is a condition where stress to the hair roots causes hair loss. Women who wear weaves can often suffer from this type.
When I suffered from alopecia, it was related to a series of incidents of acute stress. I got the rarer form where my eyelashes fell out. I looked like an alien for ages. 
Actually, I got a bit of it again last year when we had a series of shock deaths in the family.
I knew a lass who got it badly on her head when she was ten years old, and that was stress-induced.
My feeling is that you've just got to roll with this stuff happening. I wouldn't have minded if someone had made a joke at my expense at the time. It wasn't like I was very ill, or had cancer, or anything. It was just my body's response to a series of psychological shocks, and to be honest, it was better that my eyelashes fell out than my mind fracture into a million pieces.