I don’t really know what I am worried about but something doesn’t seem right with my baby. She’s always been abit fussy and grumpy , always the one crying at the baby class etc and I mean always the one ! She can be very smiley and giggly with myself and my partner and will smile for people she knows but when I take her out she will not smile at a stranger regardless of their many many attempts to make her smile , she just doesn’t seem interested in people. I know I shouldn’t compare but I have 4 friends who have had babies within 2-3 months either side of her when we are around these babies I am noticing more and more how withdrawn she seems compared to them , she also will not respond to her name even though we have been actively trying to get her to do this for months. Am I being unreasonable to worry about her social interaction at just shy of 9 months ?