It's weird that you have this post up today as for some reason, I was just thinking about the whole process earlier.
In our case, we went through a private foster/adopt agency (We'll call them S) and they, for the most part, dealt with the CPS people from difficult child's originating county. S gave us all the information they had on difficult child but what they had was received from CPS. CPS, on the other hand, wanted difficult child off the books. He was the last child from this family to be adopted, he was a handful and they wanted to be done. We didn't get nearly the information we should have, especially as first time parents. We were clueless.
Personally, if I could go back to the days when we were looking at information on various children, I would have LOVED to have someone like you there with me to tell me what some of the terms meant and how to read between the lines on the descriptions. Granted, I could have done some research but I was Miss Pollyanna and dreaming about how our life would be with our new child, yes it would be hard but we could do it and it would all work out fine with a loving child, blah blah blah blah blah. Plus, it was the same thing for us....infertility and then the excitement of FINALLY becoming parents. Looking back, my bubble was in major need of being burst.
Those of us who have adopted in this manner know that there ARE kids out there who are good kids (as in relatively no issues). But...we also know those are few and far between. My advice to you (especially since she initiated contact with you on the subject) is to tell her that you are happy for her and offer to explain the terms and such to her. Maybe something along these lines (Actually this is what I would tell her)
That's so exciting for you and your husband and I know you'll be wonderful parents! I remember those days and how confusing some of the terms can be so don't hesitate to call me if you have questions. In my case, I wish I had had more information on my son before we got him and knew more about his issues and mental status. I don't know if we would have "picked" difficult child had we known the extent of his issues. It's not that we don't love him but I think I wonder sometimes if we were the best parents for him. At the very least, had we known the extent of things, we may have done some things different. Yes there are foster kids out there with no mental illnesses or major issues but not many. Most of these kids either have so much emotional baggage or mental illness that it is a life long struggle to get through life. At the very least, I can tell you what some of the terms mean and what the child's description says inbetween the lines.
She may or may not get it or truly believe you but at least you made the effort. She really needs to know the reality of adopting this way so she can go into it with her eyes wide open. For me, I wish I had someone in my corner back then. At least now, if we do it again, we know what to look for in the wording. If you have any questions, PM me and I'll give you my number.