Mrs. Moreno is selfish and miserable?
B I think (sorry if it’s wrong)
To get to the bottom of something would mean that their is something mysterious going on, and that person wants to know everything about it as soon as possible. Its like saying that you would like to 'crack a code', or solve the case.
Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think and behave and can lead to a variety of emotional and physical problems.