Biology homework help

Little Lyric has the autosomal recessive disorder of cystic fibrosis. Neither of her parents have the disorder. Explain this phenomena through the process of meiosis (from bother her parents), heredity (using Punnett square like the one above), through conception to her development and expression of cystic fibrosis in the cells that are affected (the ones that use the mutated gene). Explain how/why that is different than her parents