Don't mind Martin; he just likes to play devil's advocate, shows that Martin wants to provoke discussion.
The idiom “he just likes to play devil's advocate” is a Latin translation of ‘advocatus diaboli’ , refers to attack an argument even one is in favor of it in order to testify the validity of the proposition or to examine it’s strength.
Answer:
“The capacity to learn is a gift; the ability to learn is a skill; the willingness to learn is a choice.”
Answer:
If I were Nilda, I would complain about the situations with my immediate boss, probably a supervisor, even if it risks straining the relationship with the other coworkers.
The reason is that in such a situation, not only Nilda is being overworked, but the overall situation of the sales department is worsening. This is why in this circumstances, Nilda has to talk to her supervisor.