Hello, Nikki!
Not to worry! Your plans for your upcoming vacation to Walt Disney World look great! You've managed to secure some very popular dining reservations as well as your daughter's magical makeover at Bibbidi Bobbidi Boutique. Well done!
Now, for your extra day, take note of attractions you didn't get to enjoy the first day in that park, or those which you know you'd love to visit a second time. You can decide once you're there which park will be your grand finale, if you just aren't sure at this time.
Another thing to consider is a visit to
Downtown Disney. There, you'll find the world's largest World of Disney Store, a great Lego store, many other fantastic shops and lots and lots of excellent dining, both Quick-Service and Table-Service alike. (This is an especially great option if you don't have an additional day's entrance into a park, since DD is not a ticketed venue.)
Let me know if you have any specific concerns about your schedule still, and I'll see if I can help. There is always so much to do in WDW, you're sure to have a wonderful time!