A menina que foi trocando a Barbie por maquiagem....trocando seu mundo de sonhos pela realidade. E hoje do passado para ela só as coisas boas importam.
The girl who exchanged the doll for make-up... exchanging her dream world for the reality. And today, from the past only the good things are important to her.
I am not absolutely sure about this and I think also your point of view is good but for the sentece: "trocando seu mundo de sonhos pela realidade" I would prefer : "exchanging her world of dreams for the reality". I am not Portuguese, but I am from Galicia (Spain) and our language (Galego) is very similar to portuguese.