Oh the old familiar puppy crying through the night. Well as you can see below, in my siggy, I have a chihuahua pup named Chopper. He is now almost five months old. We decided when we brought him home to just keep him closed in the bathroom at night with his toys, food, water, potty box and kennel with the door open(we worried about hypoglycemia as he was only 1.3 pounds so I was afraid to crate him at first without food). The first night he was home he was as quiet as a mouse. For the next week to ten days he about barked his little head off. We did the same thing, ignored him, hoping he would realize his cries did not get him attention. He literally cried all night long. You know it is bad when you say to your son, 'I came in and took Chopper out of the bathroom when he started barking this morning' and my son said, 'started, he never stopped'. Finally we decided to put him in his little kennel on the floor next to our bed and the other dogs beds. He has slept quietly ever since. He just wanted to be in the same room as everyone else. He even gets in his kennel all on his own when told it is bed time and goes right to sleep, not even a peep. Where is your puppy being kept? Is she in a kennel? I would just try bringing her in the same room as you. I think they just like to know we are close by and I think closing the kennel door made him feel safer. I hope this helps. Good luck.