Moving to Antwerp in Feb 2015

Websites will generally only have Dutch & French options, as those are the national languages (along with German, which is on many product labels, but is a minority area of the country so it's not as big a thing), but people pretty much all speak English in Flanders and I never had trouble with politely telling people "Sorry, I speak English..." and then they just switch over, and finish ringing me up or helping me with whatever. Even elderly people near us in stores, if they had cause to say something to us, if they'd heard us speaking in English would simply address us in English, same for cashiers in stores. So I don't think you will have much trouble until you're able to learn.

If you sign up for the language courses through the city, which they will ask you about doing that and the course for general living here when you go to get your ID and all that, then it's not entirely free (or maybe it was free if you did both? but since my husband is Dutch I didn't need to waste time with the other one) but they are cheap. There's also books in at least the Permeke library (possibly other branches as well) for learning Dutch, if you wanted to try out that method.

Ah the school is not something I know much about, but kids adapt quite easily, at such a young age I think she would start picking up the language very quickly and settle in without much trouble.