Their mom probably wouldn't remember if you asked her. She's not really a good person to ask. You should be asking the partner who was there for the birth, since we're the one that actually sees it happen (they were still stitching up my wife when the test was done).
For the second kid (because I was just in a daze for the first kid), being the paranoid security person that I am, I asked what happens to the sample and what kind of controls are placed on the sample. I also asked if I could opt out. I was told that I could not opt out and that the sample becomes the property of the State and there is nothing I could do about it.
This article was the first I learned that I could request it be destroyed. It is also the first time I'm learning it could be used for research (but I kind of assumed that was why they kept it in the first place, other than to add to a database for matching with potential criminal activity).
So thanks for posting this, now I have to figure out how to request the samples. I'm going to see if I can actually the spots back.