Hi, I'm a nanny and I work for a bilingual family where the father is English, but the mother is French. I am French as well and the lady asked me to talk to the children only in French, so that they can learn the language. The problem is that she doesn't do it herself(she said it is easier for her to speak English), so the children refuse to speak French now. All they say to me is that they understand (which is true, since they get what I ask them), but don't want to reply.
I don't know what to do anymore, since I can't be a translator and repeat every single sentence in two different languages. Basically I am the only one who speaks to them in French, but when they start asking "what" after every word, it gets quite annoying. We have a very busy schedule, so refusal to speak in English from my side is quite of a hassle, especially when we have to go somewhere. It takes time to get them to do something, when they refuse to admit that they understand.
Does anyone know any other approach which might work?