Being the first growth I ever remember clinging to, Alice in Wonderland themed, I'd have to agree with Wolfman-Al and add my vote too. I support the notion of focusing on the growth process 'in detail' 110%. Slow-but-detailed growth spurts are good with her ending up being crammed into whatever room she's placed in. If you wanna add a twist with a tablespoon or two of suspense, make her grow around a number of people, can't go wrong there
. Though, I had a somewhat different idea a ways back that a girl was shrunken and dressed with elaborate doll clothing and locked inside this doll house. Well whatever caused her to shrink (start here for the growth idea) wears off and she eventually outgrows the doll clothes and the dollhouse. Then for a bit, in limbo like right before The Incredible Shrinking Woman at the end before her feet grow, would be the intermission before the surprise. I know its practically the same as Spirit of Wonder, but she'd already be dressed in her normal sized clothes and would slowly outgrow them to fill the room. Just a few ideas to ponder though, best of luck with the project too.