No way! There's no way she's THAT smart!
Over the weekend, I had switched the girls' caves, where I placed MoMo's in the corner and Digi's where MoMo's used to be. A few days ago, MoMo had gone into what she thought was Digi's cave and slept (quite restlessly). Well, just a couple of minutes ago, Miss Smartypants went into 'the other cave' (Digi's) and tucked herself in for bedtime.
So much for the switch-the-caves-and-she-won't-know-the-difference trick.