If you are an English/American-speaker consulting this website for help in France, please start by watching the following video. https://www.youtube.com/watch?v=aPTTjRTmgq0. It was made by the American ‘National Aphasia Association’. It is about patience, listening and communicating with aphasic people.
Their website is a mine of information : https://www.aphasia.org
In England, ‘Speakability’, which was the national aphasia charity started in 1979/80, merged with the ‘Stroke Association’ in April of 2015. There are many local self-help groups for aphasics and a regular consultation group within the Stroke Association, ‘Aphasia Voices’, which provides views, ideas and advice on their services and resources for people with aphasia.
Details are : https://www.stroke.org.uk
Stroke Association House
240 City Road
Helpline 0303 3033 100
Textphone 18001 0303 3033 100.