I'm adopted and it's how H and I would like to build our family. We'll be able to afford it when we want children and it's not important to me to experience pregnancy, giving birth, etc.
I haven't met either of my birthparents and don't have any plans to do so in the future. I deeply appreciate my birthmother for what she did but I don't feel the need to connect. My birthfather peaced out on my birthmother immediately although he requested meetings with me when I was a baby. I believe he no-showed three times.
I didn't have any abandonment issues. My birthmother's situation was very different from your daughter's birthmother's situation so that may have an impact. My birthmother was 15 with no other children, her father had died that year in a car accident and her mother was dying from cancer. Her giving me up for adoption was almost logical, if you will.
My brother (also adopted) has a more complicated story with some more mature material. My parents provided the mature material at appropriate times depending on his age.
Are you part of any adoption groups or clubs? My parents found them extremely helpful. A number of my relatives have also adopted so my parents had numerous resources. If you have any concern of how to approach the tough stuff I think a number of resources would be of great help to you.