Just to add to what I mentioned earlier - and I think Aries was onto the same thoughts - if you had a house to show her that was clearly an upgrade, plus living closer to friends and family, plus being WAY safer, I think she'd be cool with it.. But, since you hafta build, that brings up a whole bunch of other issues..
Have you thought about asking her to help design her room? IF she wants special features, or a specific view, or something, and let he be involved in the process of building the new house? Now, I'm weird cuz I knew at age 4 I wanted to be a rock star and/or an architect (ended up being neither) so had someone offered to let me design my own room with my own view, I probably would have burned the family home down, myself..
At this age, even tho I constantly dream of being in the home I grew up in, and I honestly have NO idea what that's all about, I really don't long for the old house, or anything.. I pass by it quite often, as its only 4 houses from a main street here that I travel often, and I'd LIKE to see what it looks like inside now, but I generally don't worry about it.. The next door neighbor's kid just sold the house he grew up in (both parents died) and I had spent a great deal of time in that house and it was really weird that both houses were now gone, but it is what it is..
Here's a pic he shot of himself about a year ago inside the house.. it was his last time to ever be in the house he grew up in, and although this room was originally not his bedroom, he moved into it about the time he turned 13.. This was the front room of the house that faced the street.. Our house was directly next door to the right.. I think its a powerful pic...
Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..