Look what's been hiding in my yard all day!

I'm sure she's lost. She's very timid, but seems to be well taken care of. We managed to get her in the house. I can't, in good conscience, leave her outside tonight. It's cold and raining, not to mention that it's Halloween.

Sammy's having a fit, but other than that, she'll be kept by herself. I really don't know what to do.