Tamago - My little sad foster pooch

Things are not going well. Tamago is completely unresponsive. Sometimes its almost like she's not a real dog.. just a stuffed animal or a robot. She's numb. She doesn't seem to have feelings. She stares and stares blankly for hours. She just lies down all the time and doesn't move. Her tail doesn't wag. Her ears don't even perk up a tiny bit when she's called. She doesn't react to anything at all. Tamago hasn't eaten a full meal since she got here, just a few nibbles here and there and a few treats. She's been with me about 6 days. She has only pooped once, 3 days ago. That's how little she's eaten. She has only peed 3 times in 6 days. She should be peeing at least two or three times a day. She's not drinking nearly enough water. I don't know what to do. She isn't sick, she's depressed. She always wants to be alone and just stares into space. It's very sad to see her this way. A dog should be such a joyful creature. She seems an empty shell. I can't get through to her. You should see her now. She's just lying there, chin on the floor, eyes open staring at nothing.