You got it right
it’s : Oui, je les ai vus.
Here is the translation: Hello, my mother name is Sandrine(name) and my dad name is Vincent(name). I have an older brother, Raphaël(name), and a little sister, Céline(name). We live in Paris(city). My aunt Thérèse(name) and my uncle Hassan(name) have two kids. My cousins, Karim(name) and Jacque(name), they are 7 and 12 years old. They live at Lyon(city). My grandmother Camille(name) is widow(?). She live with us in Paris(city). She is the mother of my father. My grandparents Yves(name) and Mathilde(name) are the parents of my mother. They live at Nime(city). How is your family?
Kiss, Sylvie(name)
It means dog. Pig would be porc, cat would be chat, and is vache