I found out I Have a Daughter?

Im 26 and when I was young I didn’t really have control of my life. These last few years Ive really gotten my act together and Im definitely a different person. Well a few months ago I found out I had a kid whose 5 years old. Her mom OD when she was 3 and she was living in foster care until recently. I got custody of her and now shes living with me. I cant imagine whats shes been through, and although people have told me shes too young to remember her mom, I think she does. She seems so scared of everyone and she wont leave my side. It breaks my heart to think that if I had known about her earlier I could have prevented all that she’s been through. I don’t want to get her a psychiatrist or anything because in foster care shes had to deal with people asking her questions about her mom and I think its been to much for her. Shes only 5 years old and I don’t want her to have to go through anything else. None the less I want to help her but I don’t know how. She;s opening up to me but she just seems so afraid of everyone else. How can I help her adjust?