M.S.
Sweet n Sassy at NE Mall is great. Lina is the owner/manager and will go over the top for your sweet daughter! Also, I saw an ad for their "Peppermint Spatacular" which I am going to take my daughters to for an early Christmas present.
Tell her M. Simms from North Texas Kids magazine sent you and maybe she'll give you a discount! =))
OH - and Let's Pretend Tea Parties in Grapevine is AMAZING too!! www.letspretendteaparties.com
They have super yummy cupcakes!! They are huge!
Hope her Birthday is wonderful wherever you decide on having it!!