cookie and the baby at home

My sister had her baby boy last month and now the whole house is different. Cookie is my Shih Tzu, 4 and half years old, and she was the queen of the house before, now she has to share the sofa with a small human who cries at night. On the first day Cookie just sat outside the baby room door and wouldnt go in. I think she was jealous, or maybe confused. My mom said give her time. So I bring her in every evening to sit next to the crib for like 5 minute, and gave her a treat when she stayed calm. The baby loves her, like really loves. He look at Cookie with his big eyes and try to grab her ear. Cookie hate it but she let it happen, I think she know the baby is important now. Last week the baby cried all night and Cookie woke up and sat by the bed, not barking, just watch us. My sister said it was the most helpful thing a dog has ever done. honest, I agree. Only problem is the hair. Cookie sheds like crazy and the baby is always pulling it. We bought a lint roller and now the sofa is covered in white hair stuck to the roller. Oh well. I am still not sure if Cookie likes the baby but I see her sleeping next to the baby stroller every afternoon, so probably yes.