She was assessed in 1982 and found to have visual agnosia.
Typically, children have a period of normal language development, followed by a period of language regression with auditory agnosia.
Much of their evidence comes from patients with brain damage, such as D.F. who has a condition known as visual form agnosia.
WILSON, B.A. and Davidoff, J. APU 2985 Partial recovery from visual object agnosia: A 10 year follow up study.