Im a nanny for my cousins baby. Shes 6 and a half months old. I want to take her outside today to get some fresh air and play in the snow a little bit. Her mom already said that this is okay and told me where her snow gear is. It snowed last night but now its about 45 degrees and a little sunny out. How many layers should she be wearing, and how long can she be out before I have to take her back inside to warm up? Mom is working and unable to answer right now so some advice would help thanks.