She can drop that idea. She won't be well enough to take on such a stressful job.
What you hear about her and what is actually happening on a daily basis might well be different. She may be trying to 'get back' at her parents by throwing herself out of the car, something that happened years ago which has festered. What that might achieve she will know but it never worked for me.
I simply got a smack from my Dad when I threatened, aged 18, to jump out of a bedroom window. He didn't smack me hard but 'had to do this to keep your mother quiet' ........ she had been getting on my nerves that day and hadn't been listening to my worries. I was trying to put my point over .......... she ran for Dad, the last thing I wanted but it was her way of maintaining control over me. Hindsight in the last 10 years has shown me why !!
As we don't know what was going on behind closed doors whilst she was growing up, issues around how parents, parent, can become complicated.