The name is in the mail.

I found someone with a nameless baby. A pregnant friend mentioned on facebook she's looking for a baby name, so I e-mailed her my list of suggestions. (Yes, I realize lamenting on facebook is not the same as actually soliciting me for advice. I sent her the list anyway.) She was polite and responded positively. As for the baby, I was happy for her all along, of course, but now I have skin in the game. I can't wait for her to deliver so I can see if she picked something I recommended. Should I bill her now or after the birth?