DD's nephews have moved in... They are little ones (preschoolers, toddler), and DD is fairly jealous already.

We try to make her a "grown up" as far as offering to let her "babysit" the older 2 outside (fenced yard), asking her to help us care/manage them. I'm also making a heck of an effort to take her somewhere by herself for a few hours for some one-on-one time.

So, suggestions on how to work through sibling rivalry with the tween set?