Re: 12 month old refusing solids stills
My first DD ate no more than a teaspoon or two of food per day until she was around 14-15 months. She was always perfectly healthy, and not small, either.
Tell your friend not to stress. I know it's hard when all the other babies are chowing down on solids like there're no tomorrow, but 12 months is still very young. When I was questioning whether or not my LO would ever eat solids, my pediatrician told me to relax, because babies can be well-nourished by breast milk alone until they are around a year old (plus or minus), and after that point the transition to a majority solids diet can be slow. It's not like babies go to sleep on day 364 needing only mama's milk, and wake up on day 365 needing a ton of solid food.
Has your friend tried a baby-led approach to solids? Some kids just hate the spoon, and would much rather self-feed. If your friend hasn't tried baby-led solids, I suggest that she try putting a variety of healthy solids (not potato chips and wurst!) in front of her baby, and allow her to get the solids into her own mouth. Let her experiment, let her play. Solids should be about fun when baby has first begun.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"