my sister only spoke polish until she went to school - she was/is very well adjusted, however i have to say that unfortunately i think our polish has suffered.

I too am bi-lingual (polish and english) and was born here in Australia along with my siblings - but our parents chose to speak to us in polish - although mum was brought up here in Australia (came post war at age of 3) but dad was pretty fresh off the boat so had very little english.

Long story short - don't know if it will effect Aneta to go to Pre-school or not - but I think that if you want to ensure that she doesn't lose her polish I would continue to do what you're doing at home. My son is also living a bi-lingual life but I have to admit I tend to speak more english than polish to him as DH is Irish - but when i want to talk about him to DS - i speak in polish -

Either way all the best with your decision making process - it's tough, I'm struggling with the day care thing here also and DS will be 2 in January - oh well go with your gut feeling is pretty much the only advice i can offer - all the best