Dwarfism is a condition caused by hyposecretion of growth hormone and would explain her height.
True, you do not want to start an exercise with tight joints and muscles.
The structure that forms cranial nerve I is the olfactory nerves while forming the 2nd is the optic nerve. Together with retina and olfactory epithelium, all of them are considered part of the Central Nervous System — wherein they synapse directly to the brain without the aid of any ganglia.