No worry. During a school interview, the teacher asked my daughter to read a chinese book, but she can't read all. So she told the teacher, she only know some words. The teacher then asked her to read the word that she know.
Dont worry. When I read with my daughter, she refuses to read aloud any words. but when I 'm not with her, she can read on her own. As far as the teacher do not complain that she is lagging behind, I assume she is up to standard.