IIRC, the first question she asks you at the lake is what her favorite thing about it is (the cool blue lake being the answer), and I forget what the second question is but the third option to it is to ask her to make out.  That one, if your affection is high enough, would unlock a healing spell for her.  But to get her to talk about her home, don't pick that option, I think the 'talk about her home' option is the second option for that question.