Glad it has worked out!
Here's what I usually advise on affiliation:
No two DG chapters (or any other sorority, for that matter) are alike. There's no guarantee that you will love the chapter at the new school as much as your chapter of initiation.
I would suggest holding off a semester before affiliating. Make a lot of visits to the house...hang out, get to know members.
If you like them, and they like you, and they accept affiliates, go for it!
But if your personalities clash, if you don't like the way they do things, etc....there's no need to affiliate. You retain your Delta Gamma membership.
IF you affiliate in haste and hate it, your only recourse would be to resign from the Fraternity - not just the newer chapter. Forever.
If you affiliate and love it, then all is well.
Of course, your daughter may already know chapter members and it's clear sailing. I know she's anxious to get involved in recruitment for the fall. But it would be a shame to be miserable in the chapter.
Just food for thought.