Tim totally stalks Stephling. He probably has a photo album full of photos of the kid from birth onwards. He's planning to stake out the preschool graduation, just in case someone attacks it. He knows what mini-Steph's favourite park and piece of play equipment is, and makes sure that Poison Ivy doesn't ever use that park as a base.
Yes, I may have thought about this a little too much. You don't want to hear Bruce's contingency plans for Helena's safety, which include a computer subroutine that sends out a bemused JLA to rescue the kid when needed, in case Bruce happens to be incapacitated and/or dead. Or the back up set of faked birth certificates that make Alfred Helena's closest living relative, so that she ends up safe at the Manor if necessary.