So I don't want to be the person who offers parenting advice especially since I don't have any kids of my own, but I'm genuinely concerned with one of my friends and her children. She has two girls from two different fathers. The eldest is 4 and the youngest is around 8 mo. The baby is still new and exciting but I don't think the other child is getting the attention she deserves. I was recently over there and all of their attention went to the baby, if she was getting any attention she was getting yelled at quite harshly. They  told her to "shut up" serveral times. She was a bit hyper, yes but I'm pretty sure she was just doing it for attention. I felt bad and went and had a tea party with her and she behaved like an angel. The father has made comments about "your kid... my baby" in front of her before as well. Im really worried she feels left out. I'd chalk it up to an off day but it's not the first time. Am I wrong to feel this way?  And do I say something or just mind my own business?