I noticed the way that she was holding and comforting her little brother on Friday. I thought then, this girl has a lot of motherly instincts.
I agree with you on that however I also believe that she was prompted to hold her baby brother to hide her own baby bump. Yes of course this was going to come out that she was pregnant but her holding the baby with the blanket let it stay private for a few more days. Not that that is bad however it does say something about the media and perception.