Anna looks at her mother dumbfounded at how she's reacting to what she did to Emma when she doesn't know the whole story of what happened between Emma and their father and without responding to a mother's question she just spins on her heels and Stems away with Kenneth following behind her because he doesn't know how she will react when he tells her that he saw her fangs come out before she went into the den.
When they reach their room Kenneth spins her around and says “I saw your fangs pop out before you walked into the den but I don't think you realized the reaction you had to seeing your sister bleeding after hitting the table.”