Letter To Daughter

Hi I am a new member today. I found this site whilst looking for information about writing a letter to my daughter who has been adopted. My daughter was taken away from me (me and girl at the time) after the mother seriously hurt the child from birth - infact even before birth as she was 10 weeks early because of what the mother did. She spent the next 6 months causing numerous injurys. This can be explained at a later date. For now I am wanting to know what advice or help anyone can offer me for writing my 1st letter to my daughter, she is 5 now. I await you kind responses Paul (Alisha's dad)