After Elizabeth let go of her hand and walk away from her, Rebecca curled her hands into a fist and is trembling from anger. She hates the fact that Elizabeth is looking down at her, and also the fact that Elizabeth is not treating as an equal.
Just because she is not on the same level of social standing like the others in this school, that doesn't mean that Elizabeth should look down on her. Despite her background, her skills are just as good as theirs, maybe much better than theirs.
"She and Anna are just the same! Do they think they are better than me? Heh! Well, they're being delusional!" Rebecca mumbled to herself.
Once she is done with Anna, Rebecca promised herself that she will make Elizabeth regret looking down on her. Once she and Juan have all the resources and powers that they need, they both don't have to worry about Anna or Elizabeth getting in their way.