I have a problem understanding some sentences in RC. Below is a part from one of the RC passage:
Critics have long been puzzled by the inner contradictions of major characters in John Webster's tragedies. In his The Duchess of Malfi, for instance, the Duchess is "good" in demonstrating the obvious tenderness and sincerity of her love for Antonio, but "bad" in ignoring the wishes and welfare of her family and in making religion a "cloak" hiding worldly self-indulgence. Bosola is "bad" in serving Ferdinand, "good" in turning the Duchess' thoughts toward heaven and in planning to avenge her murder.
In the second sentence, I don't understand the part making religion a "cloak" hiding worldly self-indulgence. Could you explain what it means in the sentence?
In the third sentence, I don't understand the part in planning to avenge her murder. It is confusing whether this avenge is part of Duchess' thought or Bosola's plan.
Do the words good and bad in second and third sentences mean the quality of personality or the ability to do something?
Thanks for your help in advance.