She's doing better this morning. Got her out of the crate--with effort--and took her outside, and as soon as she does her dog business she turns and runs back to the house, up the stairs, down the hall and back to her crate. It's clearly her safe space. Belle is curious and a little maternal and Murph couldn't care less. But he did let her drink her fill from the water bowl as he stood patiently waiting. Good boy.
Belle is starting to warm up, but she still comes to me for attention and validation a lot more than usual. She's not quite sure yet but she's trying.
She's eating and drinking now, and I got the first tail wag from her when I came in from work today, but she's still not coming out of that crate.
And I'm leaning towards "Angel".