Age, and lack of experience.
A bad combination...
That's ok
411 for drivers in the RHS - it's expected. We were all
"young or wet behind the ears" as FOs (I only had 1,300 hrs when
I joined a major as a F27 FO)
Put same in the LHS and its a different ball game. Faced with a
dire situation way outside her experience and training she had
better hope there'll be an old "Dan Roman" type in the right seat
should it ever occur.
BTW how the hell did she ever get 2,400 hours by age 21, if
indeed that figure is a true one?