She's self-employed. Maybe she'd rather spend her earnings elsewhere besides a bigger airplane seat? She's also very small.
Or maybe she flipped out because she usually sits in 1st class & had to fly coach this time?
I don’t know if she ever admitted to being bipolar or having mental illness, or taking some drug, but mentally healthy people don’t hallucinate & flip out for no reason.
If she doesn’t stay on her medication or stay away from whatever she ingested, it’s going to happen again.