My children never lost weight. They always gained, and stayed on their own curve. This just hits a nerve. Of course, now we are learning that she is doing some weird things as far as nutrition. But to judge someone solely on the fact that their child is small is assinine! My kids were in the -5th percentile until they were almost 18 months old! My oldest was walking at 7.5 months and was 12 pounds!!! And in a size 2 infant shoe! Teeny tiny. I say talk to the mom, see where she is getting her information from. Maybe it is just not knowing better.