Take her through cougar canyon...
Do the Cougar walk and let her yell hello to the players...
Go inside the stadium before the game and walk around...
Buy a $3 foam finger from the stadium store...
Buy a cheap (end of year) discounted T-Shirt...
Get one of the $8 hot cocoa refillable mugs...
Stand on the seats... yell... scream... annoy the boring people around you!
Sometimes the cheap little things you pick up at the games help remind little kids about the experience.