How should I tell my daughter I'm remarrying?

Eight months ago, I met the woman of my dreams during that Philippine wife tours. She makes me feel special regardless of my age. She turns my life into something I wasn't expecting. She was so affectionate and I love it. I love her just the way she is. I am actually planning to ask for her hand at the end of the month. However, I was doubtful if my daughter would agree with this. I haven't told her about this woman before and she loves her deceased mom so much that she doesn't like the idea of having a second mom. How should I make her understand?