What a darling! If she's smart, you're going to have to watch her, though! That cat door escapade might not be her only one. My dog, Lady, is incredibly smart and has managed to escape numerous times from every kennel she's ever been in. And that was with them padlocked, too, because the regular locking systems were too easy for her! You might just have a "Houdini Hound" on you hands, too!
Tricia
Tricia