Alice has shown hints of being manipulative and cold-hearted, this is the case when she is perfectly fine with the potential destruction of an entire world just for her goal to prosper. She does have a valid reason to as she desperately wishes to return back to Earth. She is intelligent, calm-minded, calculative, wise, and caring towards her closed ones. She's simply pushed into a situation where she has no choice but to act like the bad guy to get back the life she lost.