lazy starter

So, I have a starter that is a few months old, and usually, when I feed her, she perks right up and bubbles like crazy.  (Not that that has always translated into great rising bread, sigh).  Anyway, today, I took her out of the fridge and fed her, and she's bubbling, but just barely.  Maybe she's just tired and doesn't feel like baking today.  Should I go ahead and bake a loaf, or feed her some more, or wait?  (By the way, her name is Vivian.  She's a girl.  I am a little crazy about her).