I set up an apple ID for daughter and misspelled name...how do i change name?

Misspelled the email address name or the name on the Apple ID. To change the name on the Apple ID, log into the link below using her Apple ID. In the first section, tap Edit. You should be able to change her name there.

Apple ID - Manage   

To change the email address, note the restrictions in the article.

Apple ID Name Change.        

 What to do after you change your Apple ID or password - Apple Support    I suggest doing this before you change your Apple ID or password.