How has Liza's training changed her by the end of Act Three?

She still has the flower girl inside of her that she was when she first met the professor. Especially when she worries about what she will do for the future, she falls back into flower girl mode. She, however, knows how things will change in the future and how she is going to have to do something different; she can no longer be a flower girl. Freddy has no money, but she is willing to work to support him which is what she would have done for some man when she was a flower girl. She is used to being a working woman.