Summerlin's hair seems to have stopped growing.... she'll be six months old next week. I thought her hair would be longer by now. My hubby says it might not get any longer at all! Could he be right?

I use some shampoo that comes from a local shop - it's lavendar and oatmeal, made by Cedar Creek Soaps, and she has a teaspoon of missing link with her food every day. Does anyone have any advice on how to make her hair grow?