The basment
You go right and keep following gregs brother till you get to the school
She's at work. You will find her at the end of the game.
the leaf blower is at gregs garage
in 325 North Main Street.
Use it to open the laundry room door at Gregs house.
next to gregs house if not honestly i dont know
5th lockers from the broken locker go to the right
When you unlock Gregs locker the guide is in there
it is in gregs garage after you kick rodirick out by turning off the lights
Past Rowley's House to the left
to the right of main street also known as the place where your blimp lands
she's not there in "Wimpy Wonderland". She only appears after you beat the game and after you do the sledding mini-game.