Kind of simplistic than I had hoped. Queen Mary as a character is very interesting as her religious belief is not just spiritual and environmental, but also a form of defiance against her father since it was the tool Henry VIII used to diminished her mother's status. I think her hostility towards Elizabeth due to her mother's mistreatment doesn't go deep enough. Henry forced Mary to grow up in Elizabeth's household, barring her from meeting her mother even on her death bed. Henry publicly demanded Mary to submit to his religious authority. Not just that, as depicted, she not only clashed with her father, but also her brother until the end of his life, who also publicly demanded her to submit to his religious authority. She had faced authorities her entire life, which left her stranded. Mary's determination to eliminate Elizabeth from power comes not just from her own desire to avenge her mother, but also the result of a life time of struggle against authority.
Which also makes the naïve depiction of Elizabeth iffy. There's a reason her reign was long and venerated. She was wise beyond her years. Playing off threats with expert diplomacy, danced around schemes and struggle for power. Yet she can resort to the iron fist should it is necessary.
