Take a look at the queen's true form and appetite which also startle her daughter, Anna, in the episode 'Unholly Alliance'.
Anna shows Diana who rules in this world while Erica tries to find out what the aliens did to her when she was pregnant with Tyler.
The returning series begins with a nightmare which sees Erica as the sole survivor of the Visitor's attack.
The title of the season premiere refers to the red sky that Anna unleashed at the end of first season.
ABC prefers to have 2 preemptions of 'Dancing with the Stars' in Spring rather than 2 additional episodes of the sci-fi series.
She would be Diana, the character that showrunners have discussed at the San Diego Comic Con to have a major storyline in the second season.