A letter to my semi estranged daughter that lives with her mom

I would like to write a letter to my semi estranged daughter who lives with her mom. The purpose of this letter is to try to reconcile our relationship and to let her know how much she means to me. The tone of the letter should be informal and it should include specific memories and experiences that we have shared. I want her to know that I still love her and that I'm not too proud to apologize if necessary. I hope that a heartfelt letter can start the process of repair and reunification.