A.S.
Hey C.,
I took the LSAT many moons ago, and to be honest with you I got a great score with very little preparation. I'd get a prep book. There are several good ones out there. The main components of the test when I took it were Language Arts and Logic based. I found the Logic based stuff to be much more challenging than the Language Arts stuff, so if Logic questions tend to be more chalenging for you as well, I'd hit that really hard. The prep book will have practice tests, but I know that there are also books that have only those types of questions in them. I think MENSA books are a good choice if you feel like you need more practice than the LSAT book provides. Your daughter is going to get much more active between then and now and she's going to need more from you than she does now, if you can believe it. I'd start lining up help now-parents, friends, her father- and study for a couple of hours without your daughter anywhere in your immediate vicinity.
I hope this is a little helpful, anyway. Most importantly, try to stay relaxed and get a lot of rest the night of the test so that you're fresh.
Good luck,
A.