It's too late for that. You're already hurting her.
That sounds like a coward's excuse. What's your excuse going to be tomorrow? Or the next day? When she's grown and you have no relationship whatsoever? Babysitting? She's YOUR child.
Fine. Whatever. It's probably none of my business anyway. She wanted me to tell you that she misses you. I've done that.
Now if you'll excuse me, I'm going to go get drunk for the both of us - me and her, that is.