Well done. I think the two big issues with our industry have been highlighted in this article.
1 - Why do we need controlled rest? If the rosters where designed properly then this would not be required. Also in which manual can 'Control Rest' be found? If it is not in a manual is it legal according to CAD?
2 - Not knowing the individuals background but I would happen to bet that she was a low time (MPL?) type. Exactly how can you descend 1500' without noticing? ROD 1000'/min would have had a large power/bleed change which should have been heard/felt or a ROD <500'/min would have taken over 3 min, how often does she scan the instruments?
Not saying all new pilots are like this however we are tending to fly more and more single pilot which obviously does not work with a low experience/control rest combination.