Alkhin - I've known lots and lots. Almost always they adjust within months and do just as well as us K-12 homeschooled types.
Do things to ease the transition. Find out who her best friends are, and arrange plenty of play dates, even if that means you have to do extra running around. Let her concentrate mostly on subjects she loves for the first while, and keep the school days as short as possible. If her friends get snow days, you can give her one, too.
Homeschooling is about flexibility. It can also be about togetherness - doing things like starting the day reading aloud a chapter from a book you love.
If there's anything I can do to help you, let me know. Any questions, however... weird, ask them, please!
Then theres the hubby who is ambivalent about it too. My parents think its a good idea. Im just tired of shelling out money to a private school where I have about as much influence as I do a public school : nominal. All they want is my money. Oh and then, when something goes wrong *I* get called on the carpet and get asked why isnt my child performing the way she should. Good way to get my rebellious side up...