I don't know what caused it, but my wife has suddenly switched gears and now she thinks she knows everything about babies. She is due with our first in six weeks and up until recently she had tons of questions and was kind of nervous about what to expect. Now she's suddenly gone in the other direction and nobody can tell her anything. I don't want her to be nervous and uptight, but she hasn't even had the baby yet and she's lecturing everyone in sight about parenting. What the heck?