I am glad D7 asked that, because you know for every thought that comes out of her mouth, she has about 100 left in her head she doesn't say!
D4 asked the other day if Mommy and Daddy fight a lot. I answered "Well, we have arguments but we never argue about you girls. Because we have nothing to fight about when it comes to you guys, we love you and always agree on that". Sometimes you just never know what to say.
Releasing her for yourself and your kids is a good choice. Its not completely giving up, just protecting you and your family.