Sarah, who started out speaking Spanish as her first language, is now speaking English as her stronger language. In recent days and weeks, as the visit to Nana has approached, we (read: Papa) have been trying to get her to practice her Spanish.
Papa: Sarita, vamos a visitar a Nana, necesitas hablar en espanol.
Sarah: Why?
Papa: Porque Nana no habla ingles, solo habla espanol.
Sarah: Why?
Papa: Se dice, por que? Porque ella vive en Mexico, un lugar donde todos hablan espanol, como Grandma y Grandpa, que viven en un lugar donde todos hablan ingles. Pero nosotros hablamos las dos idiomas para poder hablar con todos. Si le hablas ingles a Nana, no te va a entender, y le vas a hacer sentir mal.
Sarah: Why?
Papa: Porque (blah blah blah) ...
Sarah: Why?
Etc, etc.
When we arrived in A.P, Sarah is still talking a lot to everyone in English, although she is starting to remember more and more to use her Spanish words, and Papa and others are still reminding her to speak in Spanish.