As she has a mobility device and a carer, it may be difficult to qualify for a Working Holiday Visa. Should she have sufficient funds of her own to underwrite a year in Japan, there may be other visa categories that would fit. If you're looking for Japan to offer the infrastructure and support she requires, it may be more challenging to sort out.
What might be useful is this information on Japanese participants in conference on inclusive education for children with disabilities, which was held in the United States. Those listed below can communicate in English and I would suggest you contact them directly to ask for their suggestions and recommendations and, if possible, assistance in arranging an exchange or study program.
While the link has the full details and mailing addresses, here are the salient contacts and excerpts of their affiliations and involvements:
Ms. Reiko Ichiki
Associate Professor, Tsukuba University of Technology
Email: [email protected]
Concurrent Positions:
Visiting Lecturer, Mie University Department of Education
Policy Advisor, Aichi Disability Forum
Educational Advisor, Aichi Prefecture Council of Organizations for the Severely Disabled
Steering Committee Member, National Council for Inclusive Education for Disabled Children
Ms. Chieko Utsumi
Program Coordinator, Ai-no Jikko Undo (Love in Action)
Email: [email protected]
Concurrent Positions:
Member, Committee on Barrier Free Town Planning, Aichi Prefectural Government
Reserve Member, Examination Board for Recognition and Classification of Disability Levels, Nagoya City Government
Previous Positions: Coordinator, Center for Independent Living Kodaira, 2010-2013
Mr. Munehisa Yoshitoshi
Associate Professor, Okayama University Faculty of Education
Email: [email protected]
Memberships:
The Japanese Association of Special Education
Japanese Society for Special Needs
Japanese Association for the Study of Developmental Disabilities
Japanese Educational Research Association